The TARDIS materialises inside an Aztec tomb. Outside it, the Doctor and his companions soon discover that Mexico in the 15th century is a bloodthirsty and dangerous place... And with Barbara mistaken for a reincarnation of an ancient high priest called Yetaxa, the history teacher thinks that she can put an end to the barbaric human sacrifices once and for all. But can she rewrite history without disastrous consequences?
William Hartnell
as The Doctor
Carole Ann Ford
as Susan Foreman
Jacqueline Hill
as Barbara Wright
William Russell
as Ian Chesterton
Keith Pyott
as Autloc
John Ringham
as Tlotoxl
Walter Randall
as Tonila
André Boulay
as Perfect Victim
Ian Cullen
as Ixta
Margot Van der Burgh
as Cameca
Tom Booth
as First Victim
Dave Anderson
as Aztec Captain
