Jack scolds the team's Halloween party costumes tame, but proves the spooked one when their next job happens to be in the Bermud triangle. The vice-president's son Bill Kearns's military team disappeared with their top-secret captive in a crash. Mac correctly guesses the maneuver and spot, an abandoned island where the US base was never closed after the 13th division vanished from it after World War II. There, the wreck shows a blood trail but the escaped prisoner -rogue CIA agent Harper Hayes - and team remain missing. An old telephone rings, allowing Bill to report he's kept prisoner in an unidentified dark, cool place. Mac makes a devise to follow the signal to a base compound where Jack falls into a trap, and Sam is locked into a hyperbaric chamber, so Mac must balance several searches and rescues.
—KGF Vissers