This is a slightly confused smuggling mystery with an oddly cast Trevor Howard as "David", a British archaeologist sent to Tunisia to supervise the removal of some artefacts. He arrives at the inn run by "Anna" (Anouk Aimée) and a slightly sinister pianist Wilfred Hyde-White ("Anjo"). Next thing, he is involved in a gun-smuggling racket with local hoodlum Herbert Lom ("Rankl") and his lobster fishver mais...