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

Good morning. It's 7.35 a.m. And you're listening to your worst nightmare.

A psychopath has taken six people hostage at Berlin's leading radio station. He's playing a dangerous game with the listeners.

Every hour, a telephone will ring somewhere. Maybe it will be in your house. Or your office. And if you can't play the game, a hostage will die.

Renowned police psychologist Ira Samin must negotiate with the hostage-taker live on air. With the nation listening, he makes his sole demand: bring him his fiancée.

There's just one problem: she died in a horrific car accident eight months ago.

Facing an impossible demand, Ira must race against the clock to resolve one of the hardest negotiations of her career.

And all the while, somewhere, a telephone is ringing...

A terrifying and twisted thriller from international bestselling author Sebastian Fitzek, perfect for fans of John Marrs and Karin Slaughter.

'Fitzek's thrillers are breathtaking, full of wild twists' Harlan Coben
'Fitzek is simply amazing... A true master of his craft' Chris Carter

Sebastian Fitzek is one of Europe's most successful authors of psychological thrillers. His books have sold 12 million copies, been translated into more than thirty-six languages and are the basis for international cinema and theatre adaptations. Sebastian Fitzek was the first German author to be awarded the European Prize for Criminal Literature. He lives with his family in Berlin.

A dangerous psychopath has taken over Berlin's leading radio station and is holding everyone inside hostage in the terrifying and twisted new thriller from Sebastian Fitzek.

Good morning, Berlin. It's 7.35 A.M. And you're listening to your worst nightmare.

This morning a dangerous psychopath is playing an old game with new rules. He's taken six people hostage at Berlin's leading radio station.

Every hour, a telephone will ring somewhere in Berlin. Maybe it will be in your house. Or your office. And if you can't play the game, a hostage will die.

Renowned police psychologist Ira Samin is rushed to the scene, where she is forced to negotiate live on air.

With the nation listening, the kidnapper makes his sole demand: find his fiancée and bring her to the station.

But she is dead. Burnt to a crisp in a devastating car accident eight months ago.

Facing an impossible demand and a police commander who seems hell-bent on keeping secrets, Ira must race against the clock to resolve one of the hardest negotiations of her career.

All the while, somewhere in Berlin... a telephone is ringing.