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Playboy Loring Lamont (Tony Travis) lures his father's secretary Arlene Ferris (Andra Martin) to his beach house, with seduction on his mind. The outraged Arlene smacks Lamont in the face and steals his car to escape his clutches. When Lamont turns up murdered, Arlene is accused of the crime, but attorney Perry Mason (Raymond Burr) thinks that the killing is tied in with a mysterious phone call overheard by his client--and he is willing to risk serious injury at the hands of two hired thugs to prove his point. Based on a 1959 novel by Perry Mason creator Erle Stanley Gardner, this is one of several fourth-season episodes in which series regular William Talman (DA Hamilton Burger) does not appear; his replacement on this and other occasions is Robert Karnes as Deputy DA Chamberlin.