 "The Long Hot Summer" was scheduled on Thursdays at 10 p.m. EST opposite CBS' "Thursday Night Movie" and NBC's long-running variety series "The Dean Martin Show".The series was canceled after twenty-six episodes with the last original episode airing on April 13, 1966.In January 1966, series star Edmond O'Brien left the series after a disagreement with the producers (the disagreement was about making Ben Quick the main focus of the show instead of the Varners) and was replaced by Dan O'Herlihy.