A fast-moving automobile fails to make a sharp turn of the highway from Malibu to Los Angeles. It overturns and its occupants, Tim Slade, Newspaper man turned private investigator, and Hugh Fresney, managing editor of the Los Angeles Currier, are pinned underneath. Both are seriously injured and are unable to move. As they wait for the tide to come in and cover them, Fresney recounts that his boss, Clint VAughn has been killed, presumably by gangsters in the pay of Nick Dyke, who Fresney has fought against through his newspaper columns. Slade had been hired to avenge Fresney if Dyke's gang killed him in retaliation, Slade, one-time sweetheart of Vaughn's dipsomaniac wife Julie Vaughn, believed she still loved him, but he had fallen for Dana Jons, Vaughn's beautiful secretary. Police Detective O'Haffey investigated Vaughn's death and unearthed several suspects, including Slade, Julie, Dykes and Dana, but Slade was not satisfied and looked elsewhere