Island of the Innocent, Cheney Duvall Series by Lynn Morris and published by Hendrickson Publishers.
Cheney and Dr. Walker Baird, her colleague from St. Francis Hospital in San Francisco, arrive in Hawaii to try to convince Shiloh Irons to return with them. Though Shiloh believes the Winslows might be his long-lost family, Cheney has discovered some disturbing facts about Bain Winslow and has traveled all this way to warn her friend.
She and Walker set out to help Shiloh unravel the mysteries that seemingly surround the Winslows' determination to drive him from the island. But with a valuable fish compass and tapestry stolen, the only tangible clues to Shiloh's origins, will he ever learn his true identity?