HomePeople Biography and filmographyThomas Ritz Biography unavailable on TMDB. Movies (5)TV shows (0) Movies (5) The Killing Grounds1998 · Story, Screenplay, Co-Producer Marked Man1996 · Writer Serial Killer1995 · Male nurse Open Fire1994 · Writer Martial Outlaw1993 · Grunsky, Screenplay TV shows (0) No credits available.