Lexx - 03x08 - The keyUsing an incarnation in Xev's image, Prince continually probes Kai, 790, and Stan, asking for a way to get the key to the Lexx. They hook Stan up to 790's diagnostics and Kai determines that the key could be released during sexual rapture, instead of the ecstasy near death which Prince is so familiar with. Prince then concerns herself with a complicated ritual to give Stan the ride of his life. Kai gets suspicious and tests the Xev impostor twice, to see if she kisses like a real Xev. After obtaining the key, she then countermands the order to destroy planet Fire, and directs Lexx to Water. Kai then kills her, and the key flows to a dismayed Stanley.