Doctor Who: Arc of Infinity
Overview
Omega, an ancient Time Lord made of pure anti-matter, once defeated by the Doctor, is plotting to cross over into this dimension by bonding with the Doctor. Meanwhile, the disappearance of a man in Amsterdam piques the curiosity of his cousin, Tegan, who previously left the Doctor at Heathrow Airport and now finds herself at Omega's mercy. Fearing total destruction from the collision of matter and antimatter, the Time Lords recall the Doctor to Gallifrey to undertake the only viable solution: executing him!
Cast

Peter Davison
The Doctor

Sarah Sutton
Nyssa

Janet Fielding
Tegan Jovanka

Leonard Sachs
President Borusa

Elspet Gray
Chancellor Thalia

Michael Gough
Councillor Hedin
Paul Jerricho
The Castellan
Max Harvey
Cardinal Zorac

Colin Baker
Commander Maxil
Ian Collier
Omega/The Renegade
Neil Daglish
Damon

John D. Collins
Talor