A Pennsylvania man was sentenced to 120 years in prison for making a huge cache of child pornography that shows him sexually assaulting a dozen children, including infants at a girlfriend's in-home day care.

The FBI found John Jackey Worman with more than 1 million images of child pornography when they arrested him in suburban Philadelphia in 2007.

Worman made girls in his care perform sex acts for school lunch money, and had a girlfriend's son sleep in a locked wooden crate in his filthy basement for several years.

A teenager who had been abused for several years tipped off authorities, after watching an episode of Law & Order about child sexual abuse. She only then realized it had been wrong, Assistant U.S. Attorney Michelle Rotella said.

The sentencing judge described Worman, 42, of Colwyn as a psychopath who sponged off women and sadistically coerced his young victims.

Remarkably, the judge found, Worman has no mental-health diagnosis or childhood trauma that would help explain his crimes. Psychiatric tests conducted by the Bureau of Prisons revealed only that he is a pedophile with an anti-social personality disorder.

Worman described his childhood as a good one in which he was free to do as he liked. He told the medical staff he started using alcohol and marijuana at age 11, and dropped out of 10th grade.

He lived in his mother's basement in Colwyn through his 40s, sometimes with a girlfriend's three children — the woman herself never moved in. And he rigged hidden cameras at the home of another girlfriend, baby sitter Concetta Jackson.

Jackson, 46, of Collingdale is in prison awaiting sentencing on one child-pornography count. Prosecutors say she procured some of the victims for Worman.

Ex-girlfriend Dorothy Prawdzik of Drexel Hill was sentenced to 30 years in prison for undressing and posing young girls for Worman, and once holding the camera while he tried to rape an infant. Prawdzik, 45, also took part in a three-way sexual encounter with Worman and a 10-year-old girl.

The mother of one of the abused infants testified Wednesday, describing herself now as a tortured, overprotective parent. Her daughter does not remember the abuse — but her mother says she cannot forget it.

"I cannot know ... what was going through your head while you were molesting my daughter. Was it a big joke as I pulled away each day?" she asked Worman, who stared blankly ahead.

The Associated Press is not identifying the Folcroft woman to protect her daughter's identity, and is not identifying other sexual-abuse victims in the case.

Worman told the prison doctors that he felt no remorse.

"I am totally at peace with everything I have done," he told the prison staff, according to U.S. District Judge Lawrence F. Stengel. Worman declined to make a statement in court Wednesday.

The victim who first disclosed the abuse to police is now a 21-year-old wife and expectant mother. After the hearing, she smiled as she thought of how she had come to earn her childhood nickname, "Mouthy."

"That was the best nickname for (me)," she said as she hugged an FBI agent who worked the case. "I'm just happy that it's all over."