
Plot
As the Doctor's trial continues, evidence is presented showing his most recent adventure, one where he faces an old adversary, Sil. As a scientist conducts his unethical experiments to prolong the life of Sil's boss Kiv, the Doctor's memories of the events begins to return and an unpleasant surprise awaits him.
Trailer
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Cast

Colin Baker
The Doctor

Nicola Bryant
Peri Brown

Michael Jayston
The Valeyard

Lynda Bellingham
The Inquisitor

Brian Blessed
King Yrcanos

Nabil Shaban
Sil

Christopher Ryan
Kiv

Patrick Ryecart
Crozier

Alibe Parsons
Matrona Kani

Trevor Laird
Frax

Thomas Branch
The Lukoser

Gordon Warnecke
Tuza

Richard Henry
Mentor