In this episode of Philip Marlowe, Marlowe is hired to uncover a diamond thief at the Bjornsson mine in Rizlo, Mexico. As he delves deep into the mystery, he uncovers a tangled web of deceit involving the mine owner, Ira Bjornsson, his secretary Elliot Flory, and the mine manager, Kelly Austin, and his wife Helen. Marlowe races against time to stop a murder and confronts dangerous criminals in the sweltering heat of the desert. In the end, Marlowe unravels the truth behind the diamond thefts, revealing betrayal, greed, and a desperate struggle for wealth that leads to deadly consequences for those involved. The episode blends suspense and action with classic noir atmosphere as Marlowe navigates the treacherous world of high-stakes mining and deceit.