Deadline at Sea: The Riviera Protocol

Former intelligence officer Cole Winchester boards a luxury liner crossing the Mediterranean after intercepting a warning about a coordinated assassination plot targeting a delegation of world leaders. Cyber analyst Isla Monroe, working the ship's encrypted network, uncovers a trail of hidden messages tying several first-class passengers to a shadow criminal syndicate operating across three continents.
When ruthless extremist Vincent Rourke and his crew storm the bridge and seize control of the vessel, thousands of unsuspecting travelers become bargaining chips in his demand for access to classified government systems. As the countdown ticks toward the ship's arrival at one of Europe's busiest harbors, demolitions specialist Caleb Dorian races through the lower decks to defuse a network of hidden charges before the final crossing becomes the last voyage anyone aboard will ever take.