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I've rewritten your content but kept the original plot and film title, while providing a compelling reason to watch:
"Caribbean Enigma: In this captivating murder mystery, Major Palgrave, an eccentric yet enchanting author, stumbles upon a horrifying secret at a lavish Caribbean resort. He confides in the astute Miss Marple that one of the guests is a notorious wife killer, reminiscent of the infamous Bluebeard. However, tragedy strikes when the Major tragically dies from an apparent accidental overdose, preventing him from revealing the killer's identity. As the investigation deepens, a shocking discovery emerges - the medication that led to the Major's demise belongs to someone else. With intrigue and suspense at every turn, Caribbean Enigma is a gripping tale that will keep you on the edge of your seat, unraveling the tangled web of secrets and deceit. Don't miss this thrilling journey into the heart of darkness, where the truth lies hidden beneath a tropical paradise."
