Doctor Who. The key to time
(DVD) 

From the container: The Tom Baker years 1974-1981.

Special features: "The Ribos Operation": commentary by actors Tom Baker and Mary Tamm; "The Pirate Planet": commentary by actor Bruce Purchase and director Pennant Roberts, extended scene footage; "The Stones of Blood": commentary by actor Mary Tamm and director Darrol Blake; "The Androids of Tara": commentary by actors Tom Baker and Mary Tamm and director Michael Hayes; "The Power of Kroll": commentary by actors Tom Baker and John Leeson; "The Armageddon Factor": commentary by actors Mary Tamm and John Woodvine and director Michael Hayes; All DVDs: Pop-up production notes; who's who; photo galleries.

Tom Baker, Mary Tamm.

Doctor Who, travels with his intergalactic sidekick, Romana, while they comb the universe for the six segments of the powerful Key to Time.

The Ribos Operation: Doctor Who and Romana trace the first segment of the Key to Time to a faraway planet plagued with ignorance, con artists, spies and interminably long winters.

The Pirate Planet: The search for the Key's second segment is written by The Hitchhiker's Guide to the Galaxy's Douglas Adams, and brings the Doctor to the blissful world of Zanak, whose inhabitants are unaware that pirates are in charge.

The Stones of Blood: The third installment brings the good Doctor and Romana to the English countryside and an ancient stone circle known as "The Nine Travelers."

"The Androids of Tara": Doctor Who takes time out of his busy fishing schedule to pick up the fourth segment of the Key to Time.

"The Power of Kroll": "Swampies, " octopoids and a host of other pitfalls beset the Doctor as he travels to the moon of Delta Magna to find the fifth segment of the Key.

"The Armageddon Factor": Doctor Who and Romana go to Atrios, a planet teetering on the brink of destruction in order to find the sith segment of the Key.

MPAA rating: Not rated.

DVD, Dolby digital 2.0 stereo, Region 1.