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
as Colonel Pete Moore
Bradford Dillman
as Maj. Mike Dunning
David Soul
as Capt. Roy Bishop
Robert F. Lyons
as Capt. Cliff Riggs
Guy Stockwell
as Lt. Col. Trottman
Greg Mullavey
as Lt. Tony Podryski
Stanley Bennett Clay
as 2nd Lt. Ferguson
Jack Ging
as Green
Ken Kercheval
as White
Edward Winter
as Mr. Cheer
Jonathan Goldsmith
as Smith
Simon Scott
as Col. Barnes
