Beginning of the End (1957)

Beginning of the End is a 1957 American Monster films directed by Bert I. Gordon, starring Peter Graves, Peggie Castle and Morris Ankrum.

Plot
The film opens with newspaper photojournalist Audrey Aimes accidentally stumbling upon a small town (Ludlow, Illinois) which has been inexplicably destroyed. All 150 residents are missing, and the evidence indicates they are dead. Incredibly, the local fields are also barren, as if a swarm of locusts had eaten all the crops. Aimes suspects that the military is covering something up, and travels to a nearby United States Department of Agriculture experimental farm to learn what creature might have caused the agricultural destruction. She meets Dr. Ed Wainwright, who is experimenting with radiation as a means of growing gigantic fruits and vegetables to end world hunger. Wainwright reports that there have been a number of mysterious incidents nearby, and that locusts have eaten all the radioactive wheat stored in a nearby grain silo.

Gigantic mutant locusts rampage over the countryside. Wainwright and Aimes begin to track down the source of the mysterious occurrences, and quickly discover that the locusts which ate the grain have grown to the size of a city bus. The monsters have eaten all the crops in the area, and now have turned to human beings as a source of sustenance. It is also clear that they are headed for Chicago. Wainwright and Aimes meet with General Hanson, Colonel Sturgeon, and Captain Barton to try to come up with a solution. Machine gun and artillery fire seem ineffective against the creatures, and there are far too many to effectively deal with all at once. The United States Army and Illinois National Guard are called upon to help protect the city. But the monsters quickly invade Chicago, and begin to feast on human flesh, as well as several buildings.

General Hanson concludes that the only way to destroy the beasts en masse is to use a nuclear weapon and destroy Chicago. However, Wainwright realizes that the locusts are warm-weather creatures. He concludes that he might be able to lure the locusts into Lake Michigan using a decoy locust mating call, generated electronically with test-tone oscillators. There, the cold water will incapacitate them, and they will drown. The plan works at the last possible moment. The monstrous locusts drown, but Wainwright and Aimes wonder if other insects or animals might have eaten other radioactive crops.

Cast

 * Peter Graves as Dr. Ed Wainwright
 * Peggie Castle as Audrey Aimes
 * Morris Ankrum as Gen. John Aimes
 * Than Wyenn as Frank Johnson
 * Thomas Brown as Colonel Sturgeon
 * Richard Benedict as Corporal Mathias
 * James Seay as Captain James Barton