Series: 5
Original Air date: May 29, 2010
Number Doctor: 11th
Companion(s): Amy Pond and Rory Williams
Writer(s): Chris Chibnall
Director(s): Ashley Way
Guest Stars:
Neve McIntosh as Alaya/Restac
Meera Syal as Nasreen Chaudhry
Robert Pugh as Tony Mack
Nia Roberts as Ambrose
Richard Hope as Malohkeh
Stephen Moore as Eldane
Alun Raglan as Mo
Samuel Davies as Elliot
Synopsis: The Doctor and Nasreen Chaudry go deep underground and find an ancient society that has been disturbed by the drilling. They are gassed and taken prisoner just as Amy manages to free herself. The military commander of the underground reptilians, Restac, is convinced that the “apes’ – their term for humans – are an invading force. Calmer heads prevail and the Doctor manages to negotiate a truce pending the transfer of prisoners which he, and some of the more pacifist members of the reptilians, hopes will lead to a lasting peace. The only problem is that Alaya, the reptile prisoner has been killed and Restac is ready to go to war.