Helena Willis

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Helena Willis

Helena Willis was born 1964. She’s been working as a freelance illustrator since she graduated from Beckmans College of Design in 1991. Helena says that she has the greatest job in the world – “I am playing all days – but I also have to concentrate hard to solve the tasks in time”.

She also makes her own picturebooks. The first book received a silver medal from the Kolla (”Check out”) award in 2006.

Books by Helena Willis

Christmas in Valleby : The Big Powercut

Martin Widmark

Read and solve the Christmas mystery together with children’s favourite heroes Lasse and Maja! Martin Widmark and Helena Willis have created a quirky, atmospheric story with a new and exciting challenge on every page.Whose fault is it that a powercut…

Swedish title: Jul i Valleby. Det stora strömavbrottet

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 30-10-2019

Format: 195 x 224 mm, 72 pages, colour

The Movie Mystery

Martin Widmark

The famous film director Omar Rauk is coming to Valleby to make a movie, and he invites the Valleby residents to an audition. Muhammed Karat, Dino Panini and Rune Andersson are competing for the same extra role, but the film team puts them down. Inst…

Swedish title: Filmmysteriet

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 26-08-2019

Format: 148x210mm, 96 pages, color

The Summer Holiday Book. A Day at the Beach

Martin Widmark

Schools out – it’s summertime! Every year when the summer holidays begins, all the people in Valleby gather and celebrate at the beach. This year the police chief has even renovated the bathhouse. Lasse, Maja and Miranda participate in the annual san…

Swedish title: LasseMajas sommarlovsbok: En dag på stranden

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 29-04-2019

Format: 148x210 mm, 96 pages, colour

The detective handbook

Martin Widmark

This helpful handbook will for the first time give you the best tricks to start your very own detective agency. Follow Lasse and Maja behind the scenes and learn from the masters how to read a crime scene, interview witnesses, find missing items, wri…

Swedish title: LasseMajas deckarhandbok

Category: Children

Pub date: 08-10-2018

Format: 170 x 240mm, 96 pages, colour

The Silver Mystery

Martin Widmark

There is a lot of excavation work going on outside Valleby church. For two weeks, archaeologist Sofia Winge and her as- sistant have been frantically digging to see if they can find anything valuable in the earth. On the last day of the excavation th…

Swedish title: Silvermysteriet

Category: Children

Pub date: 23-08-2018

THE WHODUNNIT DETECTIVE AGENCY: ARTS & CRAFTS

Martin Widmark

Swedish title: LasseMajas Detektivbyrå. Pyssla och måla

Category: Children

Pub date: 02-07-2018

Format: 210 x 297mm, 24 pages, colour

Lasse and Maja’s Summer Holiday Book

Martin Widmark

A short story, fun activities and inspiration for your own summer activities all in one book. Everyone in Valleby appears to be crazy about sports now that the crazy Valleby Games is about to take place and the priest, Muhammed and the detective duo…

Swedish title: LasseMajas sommarlovsbok. Vallebyspelen

Series: The Whodunit Detective Agency

Category: Children

Pub date: 07-05-2018

Format: 148x210 mm, 96 pages, colour

The Football Mystery

Martin Widmark

It’s time for Lasse and Maja’s fourteenth case. Every year a very important football match is played in Valleby. The team from Valleby are to play the team from Solbacka. The silver shield is glittering in the sunlight, and the crowd cheer as the pla…

Swedish title: Fotbollsmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 02-05-2018

Format: 96 pages, color illustrations 148x210 mm

To Grandpa, If You Get Hungry

Nicolas Jändel

How does a child handle the loss of a loved one? In this warm portrayal of a child’s feelings when grief strikes and nothing seems as though it will ever be the same again, we join Elliot on his journey through the grieving process and out the other…

Swedish title: Till morfar, om du blir hungrig

Category: Children

Pub date: 30-04-2018

Format: 148x210 mm, 96 pages, colour

The Castle Mystery

Martin Widmark

The popular detectives Lasse and Maja have the sharpest brains in Valleby after 15 years in the detective business. But are they smart enough to solve case 26? What started as a generous chocolate tasting at the castle turns out to include a fantasti…

Swedish title: Slottsmysteriet

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 24-08-2017

Format: 148 x 210mm, 112 pages, color

Learn the letters with LasseMaja

Martin Widmark

Swedish title: LasseMajas detektivbyrå lär dig bokstäver

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 30-06-2017

Format: 210x297 mm, 24 pages, color

Learn to write with LasseMaja

Martin Widmark

Swedish title: LasseMajas detektivbyrå lär dig skriva

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 30-06-2017

Format: 210x297 mm, 24 pages, color

Learn Numbers with LasseMaja

Martin Widmark

Swedish title: LasseMajas detektivbyrå lär dig siffror

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 30-06-2017

Format: 148x210 mm, 128 pages, color

Learn to count with LasseMaja

Martin Widmark

Swedish title: LasseMajas detektivbyrå lär dig räkna

Series: the Whodunnit Detective Agency

Category: Children

Pub date: 30-06-2017

Format: 210x297 mm, 24 pages, color

The Theatre Book

Martin Widmark

 Have you always dreamed of solving crimes together with Lasse and Maja in Valleby? Finally you can hop into the town and solve the mysteries in front of an audience! Gather some friends, some props, and start rehearsing! The four scripts are here an…

Swedish title: LasseMajas teaterbok

Series: The Whodunnit Detective Agency

Category: Children

Pub date: 02-01-2017

Format: 148x210 mm, 128 pages, color

The Saffron Mystery

Martin Widmark

Now Christmas itself is in danger! They’ve run out of saffron at Café Bernard & Panini. Lasse and Maja pop along to the supermarket, but it turns out the whole of the new consignment has disappeared! Somebody must have got into the office and stolen…

Swedish title: Saffransmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 13-10-2016

Format: 96 pages, color illustrations, 148 x 210 mm

The Fashion Mystery

Martin Widmark

After 13 years’ experience in the detection business, Lasse and Maja have the sharpest wits in Valleby. But case no. 25 looks as if it will be a tricky one. It starts during the hectic preparations for the Valleby fashion competition. Almost everyone…

Swedish title: Modemysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 01-09-2016

Format: 148 x 210 mm, 96 pages, color

The Gold Mystery

Martin Widmark

Now it’s time for Lasse and Maja’s tenth case – perhaps one of their trickiest so far. All the pictures are in colour this time – and with the title in gold, of course! A huge cargo of gold arrives in the harbour at Valleby. Lasse, Maja and the chief…

Swedish title: Guldmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 01-09-2016

Format: 96 pages, colour illustrations, 148 x 210 mm

The School Mystery

Martin Widmark

There are false banknotes all over Valleby. The chief of police appeals to the children in Lasse and Maja’s class to keep their eyes open for notes without a watermark. At the same time it emerges that someone has secretly run off thousands of copies…

Swedish title: Skolmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 01-09-2016

Format: 96 pages, color illustrations, 148 x 210 mm

The Summer Holiday Book

Martin Widmark

In The Whodunit Detective Agency: The Summer Holiday Book there are lots of fun activity tips that will last all summer long. Test your knowledge about Valleby, where Lasse and Maja live, in an ingenious quiz, concoct secret messages, draw pictures,…

Swedish title: LasseMajas sommarlovsbok. Deckartävling i skolan

Series: The Whodunit Detective Agency

Category: Children

Pub date: 26-05-2016

Format: 148 x21O mm, 96 pages, color

The Prison Mystery

Martin Widmark

Case number 24 is a different mystery in an unusual setting. A theatre play at Valleby prison has just had its premiere when the actors disappear without a trace. Luckily Lasse and Maja are in the audience. The vicar puts on Hamlet at Valleby prison….

Swedish title: Fängelsemysteriet

Series: LasseMaja’s Detective Agency

Category: Children

Pub date: 08-09-2015

Format: 148 x 210 mm, 128 pages, color

The Newspaper Mystery

Martin Widmark

This is the eighth volume in the critically acclaimed mystery series about Lasse and Maja’s detective agency. The stories are all set in and around the small town of Valleby, with a rich gallery of characters to captivate the reader along the excitin…

Swedish title: Tidningsmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 08-09-2015

Format: 96 pages, color illustrations.

The Train Mystery

Martin Widmark

On a fast moving train is a sack full of money, carefully watched by the chief inspector. But he can’t resist taking a nap – and somebody pulls the emergency brake. The money is missing! Lasse and Maja suspect that the thief is still on the train.

Swedish title: Tågmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 08-09-2015

Format: 96 pages, color illustrations, 148 x 210 mm

The Movie Theater Mystery

Martin Widmark

Lasse and Maja run a small detective agency together. Meet them in a series of puzzling mysteries for primary school readers. The stories are set in and around the small town of Valleby, and have a rich gallery of characters to be captivated by on th…

Swedish title: Biografmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 28-08-2014

Format: 96 pages, color illustrations, 148 x 210 mm

The Mummy Mystery

Martin Widmark

Lasse and Maja run a small detective agency together. Meet them in a series of puzzling mysteries for primary school readers. The stories are set in and around the small town of Valleby, and have a rich gallery of characters to be captivated by on th…

Swedish title: Mumiemysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 28-08-2014

Format: 96 pages, color illustrations, 148 x 210 mm

The Fire Bridage Mystery

Martin Widmark

Two Fires have broken out in Va Ile by this last week. And as if that is not enough, things have been stolen at the fires! It is time for Lasse Maja to act! Surruner is a quiet time in Valleby. Lasse and Maja take the opportunity to clean the detecti…

Swedish title: Brandkårsmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 28-08-2014

Format: 96 pages, 148 x 210 mm

The Bicycle Mystery

Martin Widmark

Who is the rightful winner of Valleby’s bicycle race? It seems that all the contestants are very likely to have cheated. It is another exciting, funny and easy-to-read mystery, like always when Lasse and Maja are around.The first person to cross the…

Swedish title: Cykelmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 30-09-2013

Format: 64 pages, 148 x 210 mm, colour

The Café Mystery

Martin Widmark

Café Marsaan, Valleby’s lovely pastry shop, has been subjected to a number of robberies, always when there was a great deal of money in the cash register. The cashier is in shock, and LasseMaja’s Detective Agency becomes involved in a mysterious case…

Swedish title: Cafémysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 30-09-2013

Format: 96 pages, color illustrations, 148 x 210 mm

The Circus Mystery

Martin Widmark

Lasse and Maja run a small detective agency together. Meet them in a series of puzzling mysteries for primary school readers. The stories are set in and around the small town of Valleby, and have a rich gallery of characters to be captivated by on th…

Swedish title: Cirkusmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 30-09-2013

Format: 96 pages, color illustrations, 148 x 210 mm

The Diamond Mystery

Martin Widmark

Someone stole gold-merchant Muhammed Karat’s diamonds. Could it have been the snidely sniggering goldsmith Ture Modig, who really should have owned the whole store? Or maybe Lollo Smith, the newly employed health-freak with a taste for the good thing…

Swedish title: Diamantmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 05-09-2012

Format: 80 pages, color illustrations, 148 x 210 mm

The Hotel Mystery

Martin Widmark

On the day before Christmas Eve, the eminent family Åkerö, take a suite at the main hotel in Valleby. With them, they have their extremely valuable, most-prized possession – a Chinese apple dachshund. The hotel manager promises the family to take met…

Swedish title: Hotellmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 05-09-2012

Format: 96 pages, color illustrations, 148 x 210 mm

The Birthday Mystery

Martin Widmark

After 10 years, 20 clever titles and sales of 2 million books, almost every child in Sweden knows who Lasse and Maja are. But the books about these two detective friends are also exciting, fun and ingenious! “Today my very own little goldsmith…

Swedish title: Födelsedagsmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 27-08-2012

Format: 64 pages, 148 x 210 mm, color

The Swimprize Mystery

Martin Widmark

Thefts, missing swimming trunks and fire alarms – what on earth is happening during the big Christmas swim?The tree is in place by the indoor pool and Christmas music is blaring out of the speakers. It seems as if the whole of Valleby is crammed into…

Swedish title: Simborgarmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 05-09-2011

Format: 148 x 210 mm, bl/w illustrations, 96 sidor

The Hospital Mystery

Martin Widmark

What is happening at Valleby hospital? Patients jewelry is dissapearing without a trace. Is there a thief among the staff?Sara Bernard has broken her leg and comes to Valleby hospital to get plastered. But what is the chief of police doing there? Pat…

Swedish title: Sjukhusmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 15-11-2010

Format: 96 pages, bl/w illustrations, 148 x 210 mm

The Campsite Mystery

Martin Widmark

No camping wihtout a mystery for Lasse and Maja!Catching crayfish – twice as much fun!What is actually going on at the campsite? Things keep mysteriously disappearing. Luckily the well-filled crayfish creel out in the lake is safe and sound! Or is it…

Swedish title: Campingmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 03-05-2010

Format: 96 pages, b/w illustrations, 148 x 210 mm

The Racecourse Mystery

Martin Widmark

The excitement is unbearable at the racecourse outside Valleby. Does the rookie have any chance against the three star jockeys? But when the experienced horses begin to slow down, the whole thing starts to look distinctly dubious. Lasse and Maja real…

Swedish title: Galoppmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 02-11-2009

Format: 96 pages, 148x210 mm, b/w illustrations

The New Friendship Book

Martin Widmark

A cool book for everybody who likes The Whodunit Detective Agency, and who would like a book where friends can fill in information about themselves – everything from where they were born to their fingerprints! You can also find out how much you know…

Swedish title: LasseMajas Detektivbyrå. Nya kompisboken

Series: The Whodunit Detective Agency

Category: Children

Pub date: 02-11-2009

Format: 96 pages, 140x180mm

The Love Mystery

Martin Widmark

The sixteenth adventure is here, and it is in Amor’s colours!The immensely popular detectives’ sixteenth case is all about love. Valleby is to hold a love festival – in the name of love, money is to be collected for the poor children of the world. Mu…

Swedish title: Kärleksmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 06-02-2009

Format: 96 pages, 148x210 mm, colour

The Church Mystery

Martin Widmark

It’s time for Lasse and Maja’s fifteenth case. The old priest at the church in Valleby is due to retire, and the bishop has come along to hand over the job to young Fanny Winter. But is someone sabotaging the solemn ceremony in the church? And where…

Swedish title: Kyrkomysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 03-11-2008

Format: 96 pages, b/w illustrations, 148x210 mm

The Library Mystery

Martin Widmark

Books are disappearing from the library in Valleby. How is that possible, after all the library has had an alarm installed! Lasse and Maja are facing their thirteenth case!

Swedish title: Biblioteksmysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 28-09-2007

Format: 96 pages, b/w illustrations, 148 x 210 mm

The Pet Shop Mystery

Martin Widmark

It’s time for Lasse and Maja to solve their twelfth case. The animals in the pet shop aren’t very well; they’re getting more and more tired, and now they don’t even want to eat. Could there be something wrong with their food? Valdemar, the owner of t…

Swedish title: Zoomysteriet

Series: The Whodunit Detective Agency

Category: Children

Pub date: 16-04-2007

Format: 96 pages, b/w illustrations, 148 x