The best Patty McCormack’s horror movies

A widower suspects that his seemingly perfect adolescent daughter is a heartless killer.

Air Force Colonel Kenneth Penmark and his wife, Christine, dote on their daughter, Rhoda -- as does their lonely landlady, Monica Breedlove. But self-centered Rhoda has a secret tendency for selfishness and loves to accumulate gifts, whether given or stolen, in her room. Christine keeps her knowledge of her daughter's darker side to herself, but when a schoolmate of Rhoda's dies mysteriously, her self-deception unravels.

A naked teenage boy covered in blood appears at a remote sheriff's station one year after the brutal unsolved murder of a local girl. Now Sheriff Jack Shepherd, guilt ridden over the girl's murder, must confront his own demons as he desperately searches for the boy's true identity and possible victims. Little does Jack realize that he has started down a path that will bring him face to face with an unthinkable horror. Before sunrise the living will pay for the pain the dead have suffered.

An earthquake releases a strain of mutant cockroaches with the ability to start fires, which proceed to cause destructive chaos in a small town. The studies carried out by scientist James Parmiter, however, reveal an intent with much more far-reaching consequences.

In 1979, a delivery truck makes its way up a lonely southern California highway in a storm, bound for the San Diego Zoo with a deadly tropical rattlesnake as cargo. When the truck suffers a blowout, the driver loses control and hits a tree, shattering the snake's aquarium in the back and the window separating the snake from the driver. The snake slithers into the front of the truck, kills the driver with its bite and then moves off into the forest. Flash forward to 1999. The small southern California town of San Vicente has grown from 6,000 to 30,000, and the rattler, which escaped nearby years ago, has bred. There are now 25,000 of these hybrid rattlesnakes, and they are slowly making their way downhill into the town, attracted by the movement of the blasting as the town paves its way toward progress. Progress, in this case, brings terror, in this tale originally penned by John Carpenter.

Family man Matt Winslow accepts a new job in Silicon Valley and quickly finds that his associates are obsessed with a mysterious local country club whose manager, Jessica Jones, holds sway over the community.

Celia (Monica Keena, Freddy vs. Jason) has had a rough life, with a mother who died in childbirth and a father who disappeared. Unfortunately for Celia, death is not any easier than life. When she is drugged and raped at a frat party, Celia dies from an overdose, and must battle the terrible Soul Eaters who roam the afterlife.

Patty McCormack's "Mommy" is psychotically obsessed with her 12-year-old daughter Jessica Ann -- so much so that when she finds out Jessica didn't get the "Student of the Year" award again, she solves the problem by murdering the teacher who didn't recommend her for it. She dismisses the killing as inconsequential ("a minor accident"), but the homicide detective assigned to the case suspects her immediately, and an insurance investigator who also suspects her tries to get close to Jessica Ann to find out what really happened.

After escaping a lethal injection for the murders Mommy (Patty McCormack) had committed, she is given a special implant in her arm that will keep her from having homicidal urges. However, since she still tries to see her daughter and other murders are continuing, it doesn't look very good for Mommy.