Remade ten years later as Vanishing Act (1986) with Elliott Gould, Mike Farrell, and Margot Kidder in the roles of the police detective, the husband, and the fake wife, respectively.
Jack Klugman who is from Philadelphia, Pa. works for the Schuylkill Police Department in the movie which also happens to be the name of the river in Pennsylvania.
The play, "Trap for a Single Man", which this made for TV film is based on was initially filmed in 1969 as "Honeymoon with a Stranger" and was also shown on the ABC TV network.