Not really a sequel; it draws on the original characters but not the plot.
Who were the kidnappers? Were they connected to Mitch’s former crime-ridden law firm, purposely putting Mitch and Abby on the spot and forcing Mitch to divulge the size of his bank account? Is that how the kidnappers knew that Mitch had previously done business on Grand Cayman?
Was Mitch intentionally poisoned, facilitating the kidnapping?
These connections might make it a true sequel, but they were never explored.
The book is interesting, about an attractive couple living life in the fast lane, but contains too much description of meetings, meals, and travel in lieu of action.