Poof! You're Dead

Beckett and Castle are called to investigate the murder of a magician, found suspended upside down in a tank of water. The trail leads back to a money laundering scheme and an investigation into a questionable billionaire whose plane exploded over the Atlantic. Meanwhile, Lanie and Esposito try to keep a secret from the rest of the 12th Precinct and Castle struggles with his feelings for his ex-wife Gina.