'Dark Secret' is the first case of the unconventional duo consisting of former investigator Levi Kant and psychiatrist Olivia Hofmann. It marks the beginning of a new cold-case thriller series by bestselling authors B.C. Schiller.

Four years, four postcards. Slowly, she placed the fifth card on top of the others. She read the text she already knew by heart: 'I'm sorry.'

On this day five years ago, the husband and young daughter of psychiatrist Olivia Hofmann disappeared. For five years, the murderer of fourteen-year-old Lisa Manz has also been at large. Former inspector Levi Kant still struggles with the fact that he has not solved this murder. Until, unexpectedly, psychiatrist Olivia Hofmann receives a sign of life from Lisa Manz...

Is Lisa Manz still alive? Then who is the girl who was burned in such a cruel manner?

As Levi Kant and Olivia Hofmann reopen the case, they uncover a dark secret.

New edition: The available edition of 'Dark Secret' has been revised, redesigned, and includes previously unpublished scenes.