Chris Ryan 
Twister 
Code Red

Ben Tracey is on holiday in the Cayman Islands when a hurricane warning means he and his new friend, the son of an oil billionaire, must fly out of range. But as the plane heads for Miami, an unfamiliar voice comes over the tannoy: the aircraft has been hijacked. If anyone tries to make their way into the cockpit, they will be instantly shot . . . So begins this dramatic adventure, the fifth in the exciting Code Red series.