The Fat Spy (1966)

In the sparkling waters off Florida's coast, a near-forgotten island whispers promises of the legendary fountain of youth. A spirited gaggle of teenagers find themselves en route to this mysterious land, their hearts set on an adventurous scavenger hunt. Much to the chagrin of Wellington, the island's affluent custodian, his progressive daughter, Junior, is tasked with the mission of deterring these youthful explorers. With an air of excitement, she willingly undertakes the assignment, her heart fluttering for Irving, the island's lone dweller. With a cunning glint in her eyes, Junior dispatches Irving on a covert mission to infiltrate the young invaders and discover their knowledge. Meanwhile, Irving's identical sibling, Herman, and his high-school flame, the enchanting Camille Salamander, plot their own secretive journey to the island, their objectives cloaked in shadow. As the tantalizing question hangs in the tropical air - does the fountain of youth truly exist? And if it does, who will be the first to sip from its age-defying waters? The race is on, with the island's secrets waiting to be unearthed.

The Fat Spy is a comedy movie featuring Jayne Mansfield and directed by Joseph Cates.

The Fat Spy is currently streaming for free (ad-supported) on Plex, Plex Player, Public Domain Movies and The Film Detective and it's also available on Amazon Prime Video, Fandor Amazon Channel, IndieFlix, MGM Plus Amazon Channel and fuboTV.

It is also possible to buy The Fat Spy on Amazon Video.