Well-known cash-game player Garrett Adelstein was in a Hustler Casino Live heads-up battle against newcomer Robbi Jade Lew.

Adelstein had 8-7 clubs and Lew had J-4 off-suit. The flop was a promising one for Adelstein. But what happened over the next few minutes was confounding, thrilling, and absolutely unbelievable.

And it’s led the California casino to launch an investigation that may include a lie-detector test.

Adelstein and Lew were the only two players in the hand at the flop. The dealer turned over a 10 of hearts, a 10 of clubs, and a 9 of clubs. Adelstein was sitting on a flush draw and a straight draw.

He bet $10,000, and instead of folding, Lew raised to $20,000. The move surprised the announcer, who said, “She’s got one club and one heart, and wow, look at this, what is she thinking about here as she’s gonna raise it!”