Tori Spelling, one of the former stars of the 1990s TV series "Beverly Hills 90210," appears in a new Lifetime special to answer questions while hooked up to a lie detector (videos below).
In a preview clip of "Tori Spelling: Celebrity Lie Detector," the actress is asked by host Louise Roe if she had sex with any of her "90210" co-stars, notes E!
Spelling admits to sleeping with former boyfriend and co-star Brian Austin Green, which isn't a shocker, but then admits she had intercourse with another "90201" co-star.
"You're good, Louise Roe," Spelling states. "Yes! Yes, but I'm not going to tell you who it is."
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In another clip, Roe says she "will wait all night" to hear the name of the other co-star.
"Half my friends don't even know this," Spelling exclaims.
Roe gets Spelling to admit that it was not co-star Ian Zerling, but folks will have to watch the show on Oct. 3 to learn who it was (or wasn't).
Spelling does admit that her late father Aaron Spelling left her only $800,000 of his $500 million fortune when he passed away in 2006, but PEOPLE notes the lie detector will determine if she is telling the truth.