Series: 4

Original Air date: May 10, 2008

Number Doctor: 10th

Companion(s): Donna and Martha

Writer(s):   Stephen Greenhorn

Director(s):  Alice Troughton

Guest Stars
Georgia Moffett as Jenny
Nigel Terry as Cobb
Joe Dempsie as Cline
Paul Kasey as Hath Peck
Ruari Mears as Hath Gable
Akin Gazi as Carter

Fenella Woolgar as Agatha Christie
Felicity Kendal as Lady Clemency Eddison
Felicity Jones as Robina Redmond
Christopher Benjamin as Colonel Hugh Curbishley
Tom Goodman-Hill as Reverend Arnold Golightly
Ian Barritt as Professor Gerald Peach
David Quilter as Greeves
Adam Rayner as Roger Curbishley
Daniel King as Davenport

Synopsis: The TARDIS as seen before seems to display a mind of Its own and whisks the Doctor, Donna and the Time Lords former companion Martha Jones to the planet Messaline, a world where a savage war is being fought between humans and a race of fish like creatures called the Hath. In the ensuring confusion of their arrival, Martha is abducted by the Hath. Rescuing Martha becomes the Doctor and Donna’s main priority as well as attempting to put a stop to the ugly war that has consumed the planet. But that would have been complicated enough had it not been for the fact that the Doctor had suddenly been made a father again.

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