Tom Baker - (The Doctor)

Elisabeth Sladen - (Sarah-Jane Smith)

Ian Marter - (Harry Sullivan)

Donald Douglas - (Vural)

Glyn Jones - (Krans)

Peter Walshe - (Erak)

Kevin Lindsay - (Styre / The Marshal)

Peter Rutherford - (Roth)

Terry Walsh - (Zake)

Brian Ellis - (Prisoner)

The Doctor agrees to transmat down to Earth to make sure everything is okay before the Nerva survivors begin to reclaim their planet.

There, he, Sarah Jane and Harry discover the presence of a Sontaran named Styre, who is performing cruel experiments on a band of captive humans.

Styre's goal is to discover the weaknesses of the human body -- weaknesses the Sontarans will then exploit in their quest to dominate the universe.

Working Title:

N/A

Things to look for:

• Coming Soon. 

The Doctor Who Archive:

The complete unedited reel exists.

Bloopers:

Coming Soon

Title Information:

• The Sontaran Experiment / The Genesis of the Daleks
• Episodic format
• UK PAL - Released October 1991
• BBC Video cat.#4643

Title Information:

• The Sontaran Experiment
• Episodic format
• UK PAL - Released October 2006
• BBC DVD cat.#1811

Not yet released on Audio.

Title Information:

• Doctor Who and The Sontaran Experiment
• Written by Ian Marter
• Manufactured by Target
• Published 1978
• No.56 in the Target, Doctor Who Library.