Possession

Mark is a spy who returns home to West Berlin from a mysterious espionage mission to find that his wife, Anna, wants a divorce. She won't say why but insists it's not because she found someone else. Mark reluctantly turns the apartment and custody of their young son, Bob, over to her. After recovering from a destructive drinking spree, he visits the apartment to find Bob alone, unkempt, and neglected. When Anna returns, he stays with Bob, refusing to leave her alone with the child but attempts to make amends. Anna leaves in the middle of the night.