The Tahitian Tangle

"When elite CIA operative Justine Beckett is given the assignment to protect Avery Jones, a burned-out computer expert on vacation in Tahiti, she’s initially skeptical that the mission is worthy of her considerable skills. But Avery Jones is no ordinary software jock and the system he and his team have created, Sentinel, is vital to U.S. national security interests."
Jack Crockett makes a very brief appearance though does not have anything to do with this adventure.