When millionaire Thomas Thompson hires private detective Jack Brady to investigate the murder of his stunning wife, Mona, a web of intrigue unfolds on a secluded island. With five suspects, including Thompson himself, his son, a former screen star, and a penniless adventuress, Brady must navigate a labyrinth of lies. Complications arise when a masseuse reveals that the murder may have occurred at the nearby Nudist Club-a hotbed of secrets and smuggling. As Brady digs deeper, he becomes a target, attacked by a mysterious assailant and captured by a notorious dope smuggler. With the clock ticking and lives at stake, can Brady uncover the truth before he becomes the next victim?