

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.
Writing
Surprisingly philosophical dialogue for 1961 B-picture thrills
Production
Claustrophobic sets that turn cheap into atmospheric
Acting
Dayton Lummis commits hard to mad prophet energy

Director
Reginald Le Borg
Trivia, insights & behind the scenes
Shot in six days for $65,000, this epitomizes 1960s 'atomic noir'—films that weaponized nuclear anxiety into cheap entertainment while actual duck-and-cover drills terrorized schoolchildren.
Director Reginald Le Borg spent his career in 'Poverty Row' studios; this was his second sci-fi film after The Black Sleep, proving even Z-grade directors had nuclear nightmares.
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