The Four Doctors is a Big Finish Productions full cast audio drama based on the long-running British science fiction television series Doctor Who. It was originally free to subscribers of The Demons of Red Lodge and Other Stories, but can now be selected with any Big Finish subscription.

The Fifth Doctor investigates the Vault of Stellar Curios, where he has observed evidence of time leakage. But then the Daleks attack, looking for the contents of the mysterious vault. The Eighth Doctor also shows up and he and his former self create a time loop trap, spanning between their lives. This sends the Daleks to the Seventh Doctor's encounter with Michael Faraday in 1854 and the Sixth Doctor's visit to an early Dalek battlefield.

• Fifth Doctor – Peter Davison
• Sixth Doctor – Colin Baker
• Seventh Doctor – Sylvester McCoy
• Eighth Doctor – Paul McGann
• Daleks – Nicholas Briggs
• Professor Kalinda/Lady Cowen – Ellie Burrow
• Colonel Ulrik/Whitmore – David Bamber
• Michael Faraday/Magran – Nigel Lambert
• Roboman/Jariden Device – Alex Mallinson

In the Whovian timeline, for each respective Doctor, this story is set after the events of the following stories:

• Cuddlesome (Fifth Doctor)
• Legend of the Cybermen (Sixth Doctor)
• The Veiled Leopard (Seventh Doctor)
• An Earthly Child (Eighth Doctor)

• The Four Doctors on Tardis Wiki, the Doctor Who Wiki
• news Archived 30 August 2010 at the Wayback Machine
• more news Archived 16 August 2010 at the Wayback Machine