While a funeral feast is taking place in a restaurant for the well-known director of a school for the deaf, a woman dies having sex in the hotel room one floor up. Georg, her sex partner, calls a friend to dispose of the body. He feels unobserved during the phone call in the car, but Ben, a deaf guest at the funeral service, reads the phone conversation from his lips and then tries to find the perpetratorblackmail. After the police have found and identified the body, Chief Inspector Jens Stellbrink and his team first investigate among the guests of the funeral home, who are not connected to the dead person. But when a young woman who is hard of hearing is found murdered, Stellbrink holds the key to the solution because both cases seem to be linked via Ben.