Inheriting Ghost Island

Bryce Harmony's life changes dramatically when a strange woman shows up on his doorstep with a small boy in tow. She says the child is his son and that the boy's mother was Bryce's college sweetheart, Anna. He hasn't seen or heard from Anna in five years. After the paternity test results come back proving that he's the father, Bryce files for custody of Bryan due to Anna's unexpected death. Then Bryce receives notice that his paternal grandfather has died and left him an extensive estate.
He learns that part of his inheritance includes a privately owned island in the San Juan Island chain. There have long been reports that the house on this island is haunted. As if all of those changes weren't enough, Bryce's son and nanny are attacked in a public park. The attacker tries to kidnap Bryan. The kidnapping is foiled, but the person behind the attempt is still out there. Now Bryce needs to decide what has to be done to protect his son.
What's more dangerous, the kidnapper or the ghosts on the island?