The 65-year-old’s casting was revealed by crew member Michael Colbert on Twitter, who also revealed that Hudson and John Barrowman “get a great scene together” in the episode.

After filming in Wales last month, production on Torchwood: Miracle Day has resumed in Los Angeles on the ten-part series. Show runner Russell T Davies recently revealed that the show is “still fundamentally Welsh”, despite the new setting.

Other recent casting for the series includes Wayne Knight (Jurassic Park, 3rd Rock From The Sun), Daryl Crittenden(Heroes, Nip/Tuck), Marc Vann (CSI, Lost) and C Thomas Howell (The Outsiders, The Hitcher).