A flight takes off bound for New York, the usual collection of stereotypes is aboard including the arrogant celebrity Ducette (John Saxon).
However, the flight captained by Anderson (Van Johnson) soon runs into trouble as a mysterious man (Edmond O'Brien) rings the airline to tell them there is a bomb aboard! The bomb is air pressure sensitive, so will explode if the plane drops below a certain altitude. With time running out, FBI Agent Thomson (Jack Lord) battles to try and catch the bomber, though the bomber is getting drunk and throwing everything into chaos...
This is a truly excellent film with a lot of tension and plot twists and turns. Great performances and a well paced and staged plot make this film very highly recommended.