The Bishop's Palace — Jan Alexander

Elizabeth Parker comes to Brazil to take up a job as a schoolteacher in the declining city of Manalos, skirting the Amazonian jungle. Hoping to start a new life, she instead finds forbidden love with the husband of her employer, the aristocratic Kitty Drayton, who lives in a decaying mansion with her spinster sister. The atmosphere of unease surrounding Elizabeth steadily grows into terror as she is stalked by a sinister figure during Rio's Carnival, culminating in a shocking murder - for which she becomes the obvious suspect...