Fallout 's Justin Theroux just can't escape Las Vegas. He'll be joining Jude Law and Andrew Garfield in Wild Things, a new dramatic miniseries about the rise and fall of Siegfried Fischbacher and Roy Horn, whomixed stage magic, exotic animals, and Las Vegas glitz for decades before their act came to a tragic end. According to reports, Theroux will star as Steve Wynn, the Las Vegas casino mogul who first hired Siegfried and Roy to perform at his newly opened Mirage casino in 1990.