Angel has now been running a bookshop in Halden for six months. During that time, the library has become one of her favourite places. It proved invaluable when she was searching for clues in the murder that took place at her bookshop. The library also hosts a reading circle, which Angel joins in an effort to get to know more people in her new town.

At one of the reading circle meetings, the head librarian suddenly falls ill – and a few hours later, she is dead.

Several members of the reading circle know that Angel previously solved the mystery of her Aunt Milla's death, and they turn to her for help. Although Angel by no means considers herself a professional detective, she quickly decides to investigate the case. She is joined by her trusted new crew: Luna the cat, Camilla the confectioner, Adam the journalist, and her sister Isa-Linn.

This time, Angel not only wants to find the murderer – she also has to clear her own name...