Two U.S. Air Marshals, Jack Hammond and alcoholic Bill Marks, board a flight from New York City to London. Marks sits next to Jen Summers, who has switched seats so she can sit by the window. After takeoff, Marks receives a text message on his secure phone stating that someone will die every 20 minutes unless $150 million is transferred to a specified bank account. Marks breaks protocol and consults Hammond, who dismisses the threat. Marks has Summers and flight attendant Nancy monitor the security cameras while texting the mysterious person to try to identify him. Non-Stop 2014 full
When Hammond is seen using his phone and suddenly goes to the rear toilet, Marks confronts him. Hammond tries to bribe Marks, and attacks. Marks secures Hammond in a chokehold, and as Hammond raises a gun, Marks kills him exactly at the 20-minute mark. Marks finds cocaine in his briefcase, and learns the perpetrator had blackmailed him and set him up for death. He alerts the TSA, but TSA agent Marenick informs him that the bank account is registered in his name and accuses Marks of being the perpetrator. Pilot David McMillan dies, apparently poisoned. Kyle, the co-pilot, convinces Marks that he is innocent.
Marks searches the resentful passengers. One of them uploads a video in which Marks accuses and manhandles schoolteacher Tom Bowen, convincing the rest of the world that Marks is the perpetrator. Kyle is instructed by the TSA to divert to Iceland. Marks persuades programmer Zack White to write a computer virus to make the hijacker’s phone ring. The phone rings in passenger Charles Wheeler’s suit pocket, but he denies it is his. As Marks roughly questions him, Wheeler suddenly dies, foaming at the mouth.
In the first-class lavatory, Marks discovers a hole drilled into the wall that offers a clear shot to the pilot’s seat, and discovers a dart in Wheeler’s body. A passenger tells him Summers entered the lavatory recently. Marks accuses Summers of being the hijacker. Summers becomes upset, as she had stood by him, and convinces him of her innocence.