Colonel Pete Moore (Glenn Ford) is commander of the Whitney Radar Test Group, which has been experiencing electrical difficulties aboard its aircraft. To ferret out the problem, he sends a four-man crew on Flight 412. Shortly into the test, the jet picks up three blips on radar, and subsequently, two fighters scramble and mysteriously disappear. At this point, Flight 412 is monitored and forced to land by Digger Control, a top-level, military intelligence group that debunks UFO information. The intrepid colonel, kept in the dark about his crew, decides to investigate the matter himself.
Glenn Ford
Colonel Pete Moore
Bradford Dillman
Maj. Mike Dunning
David Soul
Capt. Roy Bishop
Robert F. Lyons
Capt. Cliff Riggs
Guy Stockwell
Lt. Col. Trottman
Greg Mullavey
Lt. Tony Podryski
Stanley Bennett Clay
2nd Lt. Ferguson
Jack Ging
Green
Ken Kercheval
White
Edward Winter
Mr. Cheer
Jonathan Goldsmith
Smith
Simon Scott
Col. Barnes
Kent Smith
Gen. Enright
