The TARDIS materialises in Mexico during the Aztec civilisation. The Doctor and his companions step outside to discover they are inside a tomb – the tomb, as it happens, of Yetaxa, once Large Priest from the Aztecs. Barbara is hailed as Yetaxa’s reincarnation by Autloc, High Priest of Understanding, and Tlotoxl, High Priest of Sacrifice, when they discover her in the precincts from the tomb wearing the bracelet from the deceased Priest, right now revered like a god. And she will take benefit of her position of unaccustomed capacity to try to dissuade the Aztecs from practising human sacrifice… William Russell, who performed the Doctor’s companion Ian in the original TV serial, reads John Lucarotti’s full and unabridged novelisation, initial published by Target Books in 1984.