is to be a guest on theon April 13. 1iota.com , the ticketing website for the show has listed Gillan as a guest alongside actress Diane Lane. You can register for free tickets from the iota website . Filming will take place in Los Angeles, California at 4:30 PM PT. The episode will air at a later date.Craig Ferguson has previously had(River Song) andon his show. Smith appeared in a special show dedicated to Doctor Who while he was in the US filming forand. The cast of Doctor Who will again be touring the US the promote the new series of the show. Events that have already been confirmed are: the cast signing at Barnes & Noble on April 8 and the BBC America premiere screening on April 11. Both of these events are in New York City.