After catching his shady son-in-law, Jack Hardisty, in the act of embezzling, wealthy banker Vincente Blane plans to hang him out to dry. Then murder turns Blane's restful mountain retreat into Hardisty's final resting place. When the evidence points to wronged wife Millicent, her father makes a point of calling in Perry Mason. And it's up to the legendary legal eagle to unravel the case's most baffling mystery: a buried clock at the murder scene. But as time runs short, the ticking of the clock sounds more and more like the rattling of family skeletons that everyone wants silenced....