Doctor Who: Mawdryn Undead (1983)

Director: Peter Moffatt

A warp ellipse draws the TARDIS off course. The Fifth Doctor's companions are separated from him not in space, but in time, and he has to deal with a treacherous schoolboy named Turlough. But why does the Doctor's old friend, the Brigadier, not remember him at all?

Cast

Peter Davison

The Doctor

Sarah Sutton

Nyssa

Janet Fielding

Tegan Jovanka

Mark Strickson

Vislor Turlough

Nicholas Courtney

Brigadier Alistair Gordon Lethbridge-Stewart

Valentine Dyall

The Black Guardian

David Collings

Mawdryn

Angus MacKay

Headmaster

Stephen Garlick

Ibbotson

Roger Hammond

Dr. Runciman