Here’s a quote from a review of “Deathwatch”:
The Murderer, The Thief and The Homo: Director Vic Morrow keeps the cipherlike characterizations but brings a cinematic quality to Genet's one-set stage play. Leonard Nimoy (who coproduced the film with Morrow) is the small-time thief who battles with queer Paul Mazursky over illiterate, muscular king convict Michael Forest. The three are constant cellmates so things turn a bit twitchy, talky, and tense. Deathwatch is a bold gay-themed mainstream movie which vanished rapidly on release and has never been screened since.