An attractive reporter investigating the mysterious destruction of an Illinois town stumbles upon a secret government laboratory conducting radiation experiments on vegetables. The lead scientist is eager to help find out what happened. Together they discover that giant grasshoppers are behind the devastation. Worse yet, thousands of them are headed toward Chicago! Can they be stopped... or is this the BEGINNING OF THE END?
Peter Graves
as Dr. Ed Wainwright
Peggie Castle
as Audrey Aimes
Morris Ankrum
as Gen. John Hanson
Than Wyenn
as Frank Johnson
Thomas Browne Henry
as Col. Tom Sturgeon
Richard Benedict
as Cpl. Mathias
James Seay
as Capt. James Barton
John Close
as Maj. Everett
Don C. Harvey
as State Police Car 254 Officer
Larry J. Blake
as Roadblock Sergeant
Eilene Janssen
as William's Date
Hyllton Socher
as Frank, grainary platoon soldier
