When does Penn & Teller: Fool Us return?

Penn & Teller: Fool Us is a magic competition television show in which magicians perform tricks in front of American magician-comedian duo Penn and Teller. Its first two seasons were hosted by Jonathan Ross, and the third season onwards by Alyson Hannigan. After each performance, the magician(s) who performed it win a Fool Us trophy and a five-star trip to Las Vegas to perform as the opening act in Penn's show, also at the Rio Hotel & Casino.