The TARDIS arrives in 1925 England where the Doctor ends up playing in a local cricket match due to a case of mistaken identity. The travellers accept an invitation to a masked fancy dress ball, but events take on a more sinister tone as murders are perpetrated at the country home of their host, Lord Charles Cranleigh.
Peter Davison
as The Doctor
Matthew Waterhouse
as Adric
Sarah Sutton
as Nyssa / Ann Talbot
Janet Fielding
as Tegan Jovanka
Michael Cochrane
as Lord Cranleigh
Barbara Murray
as Lady Cranleigh
Gareth Milne
as The Unknown / George Cranleigh
Moray Watson
as Sir Robert Muir
Ivor Salter
as Sergeant Markham
Andrew Tourell
as Constable Cummings
Ahmed Khalil
as Latoni
Brian Hawksley
as Brewster
