Duration: 45m

PG-12 7.4 Adventure / Action / Drama / Sci-Fi / Fantasy

Doctor Who S4E4

Martha enlists the Doctor's help to investigate a new threat involving the Sontarans.

Release Date: May 16, 2008 (UK)

Creator: Sydney Newman, C. E. Webber & Donald Wilson

Cast: Matt Smith, David Tennant, Karen Gillan, Nicholas Briggs, Jenna Coleman, Peter Capaldi, Billie Piper, Jodie Whittaker, Mandip Gill