Thin Blood.

For Detective Inspector Alexander Bischoff, a functioning family is something he's never known. He grew up without parents and hasn't started a family of his own. He works in a special investigations unit at the police department. Although he initially chose his profession because he wanted to do good, after 25 years he's come down to earth and is completely disillusioned. He's eventually assigned to investigate the case of a large Arab family – but after that, nothing will ever be the same again. For Alexander, the lines between good and evil, between right and wrong, become blurred...