Polly Stjärne

Lasse and Maja have had their detective agency shut down by the police chief when a customer ask for help to prove her father is innocent of the train robbery he was convicted of. Lasse and Maja now see their great chance to show off.

As people in Valleby are looking forward to Valleby Day, a thief suddenly strikes and carries out a series of thefts, leaving behind symbols linked to the Zodiac and space.