Resort at Castaway Bay

"Sydney Whitmore, a forensic psychologist living in San Francisco, moves home to Shipwreck Island, and the resort owned and operated by her family, after tragedy strikes leaving her struggling for a way to make sense of things. After finding out about the assault of an old friend, which has left him comatose, she renews her relationship with Ezra Reinhold, a reclusive billionaire who enjoys poking around in cold cases and has the means to hire the best people to find the answers no one else has been able to. In book 2 in the series Syd is asked to help a man regain his memories after showing up a decade after he went missing with no memory of where he'd been since disappearing from his home when he was eight. Meanwhile, she continues to look for answers relating to Riley's attack, which seems an impossible task, until Kelly invites her to a meeting with Ezra's group who all pitch in to offer insight." - amazon.com