Sydney Whitmore, a forensic psychologist working for the FBI, moves to Shipwreck Island and 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 7 in the series, Syd is asked to play bodyguard for a popular fitness guru who is certain she's being stalked. Syd isn't sure that babysitting should be part of her job description until Colin fills her in on the deeply buried and never discussed roots to her past. 

In book 8 in the series, a man is found floating in a raft is rescued by has no memory of who he is or how he ended up drifting at sea. Sydney is asked to work with the man in the hope of helping him remember. Syd begins to have some luck and is feeling downright hopeful, when the body of another man washes ashore. Might their circumstance be related? Might the man who was found in the raft either be the victim of, or killer of, the man who washed up on the beach?

In book 9 in the series, Sydney goes with Emily to visit Beverly in the rehabilitation hospital she has been moved to. While they are there Syd meets a woman suffering from a brain disorder following an injury to the head. The woman is able to speak but what she says seems like nothing but gibberish.

While her speech pattern is completely disorganized, she seems alert, so Syd sits with her in the garden while Emily is meeting with Beverly’s doctor and politely listens to what she says. The longer Syd sits there the more certain she is that there are patterns contained within the babbling. She begins to ask the woman questions and while the answers are as disorganized as anything the woman has said to that point, Syd begins to suspect that the woman may actually have been a witness to a murder her FBI team had investigated but had been unable to solve.