Curd Jürgens erzählt... S01 E05 ... the story of the "gentleman from the police"

Fred is a police officer in Los Angeles and is summoned to see Mrs. Brown about a break-in, who turns out to be his childhood sweetheart Helen. She actually wanted to make a career in Hollywood, but she never succeeded. Fred admits that he still loves her, but soon has bad suspicions: is he facing a murderer?