
Plot
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.
Trailer
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Cast

Peter Davison
The Doctor

Matthew Waterhouse
Adric

Sarah Sutton
Nyssa / Ann Talbot

Janet Fielding
Tegan Jovanka

Michael Cochrane
Lord Cranleigh

Barbara Murray
Lady Cranleigh

Gareth Milne
The Unknown / George Cranleigh

Moray Watson
Sir Robert Muir

Ivor Salter
Sergeant Markham

Andrew Tourell
Constable Cummings

Ahmed Khalil
Latoni

Brian Hawksley
Brewster

Timothy Block
Tanner