Episode: Series One, Episode Two
Name: Day One
Written by: Chris Chibnall
Running Time: 50 minutes
Broadcast Date: 22nd October 2006
Preceded by: Everything Changes
Followed by: Ghost Machine
Starring:

• John Barrowman – Captain Jack Harkness
• Eve Myles – Gwen Cooper
• Burn Gorman – Owen Harper
• Naoko Mori – Toshiko Sato
• Gareth David-Lloyd – Ianto Jones
• Kai Owen – Rhys Williams
• Adrian Christopher – Private Moriarty
• Ross O'Hennessy – Sgt. Johnson
• Sara Lloyd Gregory – Carys
• Ceri Mears – Banksy
• Justin McDonald – Matt
• Tom Price – PC Andy Davidson
• Brendan Charleson – Ivan Fletcher
• Rob Storr – Gavin
• Alex Parry – Eddie Gwynne
• Felicity Rhys – Bethan
• Naomi Martell – Receptionist
• Donald Longden – Mr. Weston