When a photo taken at the 1964 Clay-Liston championship fight held in Miami Beach is displayed as part of an art exhibit, several powerful people attending the exhibit's opening are shocked and upset by what they see in the background of the photo. Upset enough to have the entire exhibit torched and the photographer killed to obtain all copies of the photo. However, there is one remaining copy still out there, and it happens to end up in the hands of free-spirited Key Largo loner Thorn, who is visiting Miami to baby-sit his lover Alexandra's Alzheimer's-afflicted father while she's out of town.

For Alex and her father's sake, Thorn is really trying to adjust to Miami life, but the noisy rat-race is hard for him to endure. Thorn thinks that two-weeks with Alex's father, a retire Miami cop who's also an old friend of his, will be a good test. It becomes much more than that as he's sucked into the crime spree involving the search for the final photo, which his old friend possesses.

The same night the photo was shot of the fight, the family of a militant anti-Castro Cuban exile was executed. The two surviving sons of that family know the infamous photo can give them clues to who murdered their family, so they are in hot pursuit to acquire it from Thorn. Things get even messier when a CIA operative and an old assassin join the search. How many will end up dead before the puzzle involving the photo is finally solved? And will Thorn be one of the survivors or not?

Not having read any of Hall's previous Thorn thrillers, I didn't quite understand all the dynamics of his relationship with Alex and her father. This left me a bit out of sync at the start of the book, but I soon had enough of it figured out that I became totally immersed in the plot's progression and the characters involved. Based on real events in the past and newly declassified documents, this is an interesting crime thriller and an exciting depiction of life in South Florida.