A seaplane hunting for a boat filled with stolen treasure leaves the Florida Keys, but its owner is more concerned with finding his friend who is missing along with the crooks and his boat. This is the core of GREEN TO GO, a fast-paced caper aimed at diving and aeroplane enthusiasts.

Buck visits a bank along with his brother Ben in the first chapter, to open a safe deposit box left by their parents. There are many references to the previous book in the series and half-completed treasure quests, but mainly Buck discovers that he was adopted. He spends the night drowning his sorrows and wakes up in a police station with no memory of the previous night. Turns out he was lying drunk on the footpath when thieves raided a museum. To prove he had no connection he tries to help with police work, but his friend Tank has vanished along with his sports fishing boat. Buck owns and pilots a small seaplane so, ostensibly on another hare-brained sunken treasure quest, he sets out to seek Tank.

The museum thieves are Peruvians wishing to repatriate gold and silver plundered by Europeans centuries previously, and the hunt takes Buck from the Bahamas via Panama to Cuba, where the plane is shot down and he is forced to seek shelter with local peasant farmers. The Peruvians are still at large, and bounty hunters are attracted by the treasure, the FBI is tracking Buck and won't approve of his landing in Cuba, and his plane looks to be irreparable. All in a day's work for this adventurer.

Definitely better suited to men, GREEN TO GO focuses more on tech speak, piloting and navigational aids than on local people or the beauty of the natural surroundings. The Florida location makes for inevitable comparison with the works of Randy Wayne White, but as a fisherman White reflects more on the environment than does John Cunningham, who has concentrated on a pacy and sometimes violent serie of escapades. I felt there was too much dependence on readers having read the first book and no attempt to ease in readers who hadn't. But if you read the first and enjoyed it, doubtless you'll like GREEN TO GO too.