The difficulties faced by drug addicts attempting to kick their habits provide the basis of this gritty, realistic drama that was filmed at a real rehab house in Santa Monica, California. The story centers on Zankie (Alex Cord), an ex-con who is having trouble following the strict rules of the house. Soon he finds himself involved in an affair with another inmate, an ex-hooker (Stella Stevens). She is only supposed to monitor and assist with his recovery, not get emotionally involved. When Zankie gets into a fight with another patient (Chuck Connors) both he and the girl leave the center. Soon after leaving, he begins looking for more drugs and dies of an overdose in a cheap hotel. The ex-hooker then returns to the rehab house to resume her own treatment. Synanon, the model for the rehab-house of this 1965 feature, was a large ex-addict-run (and ex-con-run) enterprise which expanded its operations steadily over the next decade. It was famous for its harsh "tough-love" policies and its high success rate and would have continued its high-profile role in the rehab industry except that it became embroiled in several scandals in the late 1970s, effectively closing its doors well before the Reagan era.
~ Clarke Fountain, All Movie Guide