Mirage on the Amazon — Mary Kistler

The letter held a hidden meaning ...

All Julia Scott knew was that her sister was being poisoned. Claire lived in Peru with her husband, Patrick Courtney--and Julia, who had never been out of England, packed her bags immediately.

The boat trip along the Amazon did not put her fears to rest. Nor did the polite but distant captain, Eric Sorenson. Eric admitted to a passing knowledge of the Courtneys, yet when the boat arrived, his friendship with Claire's housekeeper could not be ignored.

Julia's fears turned to desperation, for Claire was in a Brazilian hospital and could not have visitors. Was she really ill--or was she even alive?