A bomb on board an airliner has an altitude-sensitive trigger. Unless a ransom is paid, it will explode when the plane descends to land.

A continuation of the anthology series “Alfred Hitchcock Presents”, hosted by the master of suspense and featuring thrillers and mysteries.

A cross-country airliner, whose passengers include a nuclear physicist, a rocket expert, and a mathematical genius, is drawn beyond radar range by an unknown, unbreakable force.

A television anthology series hosted by Alfred Hitchcock featuring dramas, thrillers, and mysteries.