Inspired by one of the largest unsolved cases of serial killings in the United States, the New Bedford Serial Killings of 1988.

Harbormaster Corby Church finds the bones of a human body on Bird Island off Cape Cod. As brassy, young police detective Yemanjá Colón struggles with the case, she realizes that Church may know more than he’s letting on, and a trip he took to the Bahamas in the ’80s may prove the key.