Detective Danny Smith zeroes in on Gil Fernandez, a former Miami-Dade police officer and ex-owner of the Apollo Gym. Smith takes us inside a maximum-security prison where Fernandez, serving multiple life sentences, might hold the key to unlocking a string of unsolved murders. Through a tense face-to-face interview, Smith wonders whether Fernandez will be willing to shed any light on the brutal murder of Billy Halpern.