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
Peter Purves
David Weston
Eric Thompson
Annette Robertson
John Tillinger
Christopher Tranchell
Erik Chitty
Edwin Finn
Clive Gazes
Reginald Jessup
Barry Justice
Joan Young
Leonard Sachs
André Morell
Teligny
Cynthia Etherington
Norman Claridge
John Slavid
Will Stampe
Ernest Smith
Jack Tarran
Leslie Bates
Jackie Lane