Robin Clarke (born June 27, 1942) plays the part of Ed Haynes, a Vienam War vet, conman and ex-husband of Pam Ewing who returns to Dallas to try to extort money from her after he steals the original annullment papers from a drunken, passed out Digger after he drives him home after drinking with him in a local nearby bar in the Season 2 episode of the CBS-TV series Dallas titled "Double Wedding". Robin, in addition to his Dallas episode appearance, Robin has also made guest appearances on such TV shows as Police Woman, The Six Million Dollar Man, Hart to Hart. the short-lived NBC-TV series Mrs. Columbo and Columbo as well. He has also made noted appearances in the films The Formula (1980), Horror Planet (1981), Boxoffice (1982) and White Wolves III: Cry of the White Wolf (2000).