Watch THE CALENDAR KILLER on Amazon Prime now - a gripping adaptation of Sebastian Fitzek's bestselling novel WALK ME HOME.

A missing child. A desperate father. A terrible secret.

Guido T has already confessed to two horrific child murders. Berlin police are sure he also murdered six-year-old Max, who disappeared without a trace a year ago.

But now the killer is staying silent. Without any certainty, Max's parents are unable to say goodbye to their son.

Everythin ...