
The TARDIS materialises in Paris in the year 1572 and the Doctor decides to visit the famous apothecary Charles Preslin. Steven, meanwhile, is befriended by a group of Huguenots from the household of the Protestant Admiral de Coligny. Having rescued a young serving girl, Anne Chaplet, from some pursuing guards, the Huguenots gain their first inkling of a heinous plan being hatched at the command of the Catholic Queen Mother, Catherine de Medici.

William Hartnell
The Doctor / Abbot of Amboise

Peter Purves
Steven Taylor

David Weston
Nicholas Muss
Eric Thompson
Gaston, Viscount de Lerans
Annette Robertson
Anne Chaplet

John Tillinger
Simon Duvall
Christopher Tranchell
Roger Colbert

Erik Chitty
Charles Preslin
Edwin Finn
Landlord
Clive Gazes
Captain of the Guard
Reginald Jessup
Servant
Barry Justice
King Charles IX of France
Joan Young
Catherine de' Medici

Leonard Sachs
Admiral de Coligny

André Morell
Marshal Tavannes