Laura's Island — Mary Vincent Hunt

The same day Laura Brown found two strangers hiding on a deserted island in the middle of Talisman Lake, she found her sister Jenny hiding in her lakeside cabin. Blond, achingly-beautiful Jenny who had moved out three years ago, chasing excitement and success, and who had never bothered to get in touch since. Why had she come back? What was the connection between her surprise return and the trespassers on Spider Island -- Burny Mollet, a brilliant guitarist suffering from hysterical blindness, and Gil Bricker, his accompanist-partner, suffering from guilt because of what had happened to Burny? And which of them had put that terrible look of fear in Jenny's eyes...?

Original Title: Cast a Green Shadow