Berlin Syndrome is a 2017 psychological horror thriller film directed by Cate Shortland from a screenplay by Shaun Grant, based on the 2012 novel of the same name by Melanie Joosten.

Berlin Syndrome had its world premiere at the Sundance Film Festival on 20 January 2017 and was released in Australia on 20 April 2017 by Entertainment One.

When Andi returns, Clare begs him to let her go but he begins restraining her to the bed while he is at work, leaving her to soil herself.

That night, Andi lets Clare shower and she finds a clump of long blonde hair in the drain.

Andi's bizarre behaviour continues, including taking pictures of Clare in disturbing positions, cutting off pieces of her hair, and retreating to a locked room.

As the holidays approach, Clare's mood seems to brighten; she learns to play the accordion and bakes treats for Andi.

On New Year's Eve, Andi attends a work party and Clare breaks into the locked room and finds photo albums of a blonde woman.

A man outside shines a flashlight at the windows; she screams for help and he attempts to rescue her, but Andi returns and kills him with a crowbar.

Reading a newspaper report about Clare being missing, Andi plans to kill her by dehydration after he shuts the water off.

According to director Cate Shortland, the character of Andi had romanticised and idealised the East Germany of his childhood, and wanted to recreate a utopia in his own life.

The website's critical consensus reads, "Berlin Syndrome offers thriller fans an uncommonly well-written descent into dangerous obsession, enlivened by taut direction and a committed performance from Teresa Palmer.

"[13] On Metacritic, the film has a weighted average score of 70 out of 100, based on 17 critics, indicating "generally favorable reviews".