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.
Colin Baker
as The Doctor
Nicola Bryant
as Peri Brown
Michael Jayston
as The Valeyard
Lynda Bellingham
as The Inquisitor
Brian Blessed
as King Yrcanos
Nabil Shaban
as Sil
Christopher Ryan
as Kiv
Patrick Ryecart
as Crozier
Alibe Parsons
as Matrona Kani
Trevor Laird
as Frax
Thomas Branch
as The Lukoser
Gordon Warnecke
as Tuza
