House of Athena — Janice N. Bennett

That wealthy family were considered a strange lot, but Christina Shaw, a young American visitor, was not overawed by them, because she wanted to stay in Greece, Chris was willing to stay at their house near Athens. There she found herself with Athena Christoperou, the crippled heiress whose companion she was to be, Athena's aunt and uncle, and their wayward son.

When Chris first came to the great house, she sensed something subtly, fatefully wrong. But soon felt herself irresistibly held there by a web of emotion and circumstances that she no longer cared to evade. The events that followed were to tax her every resource of understanding and courage as she struggled with secrecy, agonized love, suspicion and a hidden madness that were leading to murder -- perhaps even her own.