Old Dr. Schroeder, who has been struck off, attends a late night chemist every night for a prescription, and to observe Dr. Leichner, an ex-Nazi war criminal who has taken a new identity. Leichner has a blonde wife, and a blonde mistress, who is blackmailing him. He is also involved in a drug scam involving two lockers and two keys, and aims to become a millionaire selling drugs. Meanwhile, a wounded bank robber has been taken to the dispensary for treatment, and to rendezvous with his gang leader. Dr. Schroeder finds himself attending to the robber's injuries.
The Monthly Film Bulletin wrote: "An all-night chemist is at least a novel setting for a crime drama. Often vague, despite the final clarification, it is quite adequately played. Despite the billing, William Sylvester has only a small, inconsequential role."[4]
Sky Movies wrote that the "harsh black-and-white photography effectively catches the bleak, claustrophobic atmosphere of the all-night chemist's in which some of the drama is set."[5]
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