Lieutenant Evan Caldwell is a man adrift, cut loose from a life he thought he knew. His wife has lain comatose for months, and the accident that put her there has raised questions that she's unable to answer. Now, with his wife in a nearby hospice, Evan has moved to a boat in the quiet Panhandle town of Port St. Joe, where he works as an investigator with the local sheriff's office.

Evan's hopes for peace and solitude are shattered when the current sheriff is found murdered. Worse, Evan's put in the position of interim sheriff while he investigates the murder of his former boss.

Evan keeps coming up with more questions than answers; questions about what really happened in the dark privacy of the swamp, and questions about what really happened to his marriage and his wife.

As the answers begin to surface, he discovers secrets as deep and twisted as the roots of the ancient cypress trees that litter the landscape - secrets that no one wants revealed.