Comedian and actor John Bishop has joined the cast of Doctor Who for Season 13, the BBC announced Friday. Bishop will play Dan, companion to the 13th Doctor, played by Jodie Whittaker, on the beloved sci-fi series, following the departures of Bradley Walsh and Tosin Cole. "As he becomes embroiled in the Doctor's adventures, Dan will quickly learn there's more to the Universe(s) than he could ever believe. Traveling through ...