They Crawl

A scientist explains how the savagery and efficiency of the insect world could result in their taking over the world.

A swarm of locusts appears on the horizon near a Midwestern town and the inhabitants must find a way to destroy or divert them before the insects devour the area's valuable crops

A disease carried by common cockroaches is killing Manhattan children. In an effort to stop the epidemic an entomologist, Susan Tyler, creates a mutant breed of insect that secretes a fluid to kill the roaches. This mutant breed was engineered to die after one generation, but three years later Susan finds out that the species has survived and evolved into a large, gruesome monster that can mimic human form.

An ant colony finds that the strange new food source they've discovered may be something more of a curse than a boon.

When a series of murders hit the remote English countryside, a detective suspects a pair of travelers when it is actually the work of the undead, jarred back to life by an experimental ultra-sonic radiation machine used by the Ministry of Agriculture to kill insects.

A young girl, with an amazing ability to communicate with insects, is transferred to an exclusive Swiss boarding school, where her unusual capability might help solve a string of murders.

A teenager's infatuation with the new bad boy at school leads him onto a dark path.

Police lieutenant detective Thomas 'Thom' Randall's steady girl-friend, Dr. Jennifer 'Jen' Allen, is Dr. Aaron Michaels's main assistant on his pharmaceutical firm Bellion's research program to cure the highly contagious, fatal infection Guinin. A convicted murderer, whom Thom arrested, is one of their special drug test subjects, but escapes. The convict and Jen are affected by radioactively altered DNA from an experimental reactor used on mosquitoes which transfer quinine. The convict soon mutates into a mosquito-like monster, which sucks its victims dry. By the time Thom and his junior murder brigade partner Charlie Morrison figure out what happens, Jen starts mutating herself.

A man enclosed in a plastic bubble, his sister, and their best friend must defend an apartment complex from the mutant Judas Breed insects.

A group of scientists try to stop a swarm of flesh-eating locusts that escape from a top secret government lab in the USA Midwest.

Scientist Dr. Bradford Crane and army general Thalius Slater join forces to fight an almost invisible enemy threatening America; killer bees that have deadly venom and attack without reason. Disaster movie-master Irwin Allen's film contains spectacular special effects, including a train crash caused by the eponymous swarm.