Marilyn Monroe and JFK

Marilyn Monroe appears in a sex tape, showing her participating in a threesome with former US President John F Kennedy and his brother Robert?

According to UK’s The Mirror, an 8mm film of the threesome has been kept secret by a former Hollywood bodyguard out of respect for Marilyn’s late husband Joe DiMaggio, but will finally be sold at auction on Tuesday (March 4).

“It’s real,” former bodyguard, 56-year-old William Castleberry, told Radar Online. “I had it for years and I never released it out of respect for Joe DiMaggio.”

The tape is set to be sold along with various other memorabilia collected by Castleberry.