Private investigator Philip Marlowe is hired to tail a woman suspected of murder, only to find himself protecting her from the machinations of a powerful family. Marlowe navigates the cynical landscape of Southern California, tasked by a lawyer to observe a redhead recently acquitted of killing her husband. As he uncovers the truth behind the accusation, he faces opposition from wealthy, corrupt figures who refuse to accept the legal verdict. The narrative unfolds through Marlowe's sharp, first-person perspective, emphasizing his personal code of ethics against the backdrop of a decaying social order.

Readers and critics often note that this final novel reflects a more subdued tone compared to earlier entries in the series. Discussion frequently centers on the intricate, sometimes convoluted plot that characterizes Chandler's later work. Many highlight the enduring appeal of Marlowe's voice, which remains consistent even as the narrative structure shifts. While some argue the pacing is less urgent than his earlier classics, others appreciate the atmospheric depth and the cynical observations on human nature that define the author's style.