The India Fan — Victoria Holt

The daughter of the local impoverished vicar, sensible Drusilla Delany becomes fascinated with the wealthy Framling family--especially with the son and daughter, the handsome, mysterious Fabian, and the beautiful, impetuous Lavinia. Through them, she finds herself the unlikely heir to an extraordinary bejeweled fan made of peacock feathers. But though priceless and dazzlingly beautiful to behold, the fan bears a curse that promises ill fortune--and even death--to whoever possesses it...

Drusilla is tempted to scoff at the old superstitions--until she travels to exotic India, and, during the bloody Sepoy Mutinv, witnesses a brutal and shocking murder that chillingly echoes the legacy of... THE INDIA FAN