Percy Jackson & the Olympians: The Lightning Thief
At Aunty Em's Garden Emporium, they are attacked by Medusa (Uma Thurman), but manage to kill her, and take the pearl from her bracelet. They also take her head, which they later successfully use against a hydra that attacks them during their gaining of another pearl from the crown of a giant statue of Athena at the Parthenon replica in Nashville, Tennessee. They acquire the third and final pearl from a roulette wheel at a hotel casino in Las Vegas, Nevada, in part with help from Poseidon. The map reveals an entrance to the Underworld in Hollywood, California, beneath the Hollywood Sign.