Der Beobachter (2015)

The morbid longing for a family life drives the lonely Samson Segal to observe and document his neighbor around the clock with the camera. Therefore, he knows that the supposedly ideal world next door has a crack: Gillian Ward is having an affair with John Burton, the smart handball coach of her pubescent daughter. Only her best friend Tara knows about the dangerous liaison. When Gillian decides to live with her family and ends the relationship with her lover, her husband Tom is murdered. Strangely enough, the traces at the scene of the crime match the pattern of an unknown serial killer who has two women on his conscience. Samson, who is the main suspect in the investigation, goes into hiding and hides with Gillian's lover, of all people. Ex-police officer John is also suspicious, as he had to quit work years ago after allegations of rape. But it doesn't really fit together: Why did Tom have to die? All of the other victims were women. While the police are searching in vain for the fugitive Samson, Gillian, and her daughter seek refuge with Tara.