A famous movie star's fan-club secretary has been brutally murdered. She has in her office old newspaper clippings regarding a missing heiress. Did the secretary know something about the mystery of the heiress? Tom Alder investigates.

Hollywood 1961. Famous movie star Leroy Dane's fan-club secretary has been brutally murdered. In her possession are old newspaper clippings regarding a missing heiress. Tom Alder, who specializes in finding missing heirs, investigates. Did the secretary know something about the mystery of the heiress, who was last seen at 16 at a malt shop near school? When Tom goes to check up on Leroy Dane at a restaurant, Tom sees his ex-fiancée Linda for the first time in many years. Linda's friend Nikki is also at the restaurant. With the help of Tom's friends--a colonel in Washington D.C. who has access to military records and a detective in New York who has people doing research and running down clues--Tom begins to unravel a complicated story that involves Linda, Nikki, Leroy Dane, and his own past. "Twenty Plus Two" is a 1961 whodunit film that came out of the Allied Artists studio, starring David Janssen, Dina Merrill, and Jeanne Crain.