Worman, 41, of Colwyn, is charged in a federal indictment with 55 counts of manufacturing child pornography and one count of possession of child pornography. He was arrested in 2006.
Codefendant Dorothy Prawdzik, 44, of Drexel Hill, is charged with 15 counts of aiding and abetting Worman's alleged manufacturing of child pornography. The jurors will hear the closing arguments and deliberate on Prawdzik's charges after they return a verdict in Worman's case.
A third defendant, Concetta Jackson, 45, of Collingdale, pleaded guilty last week and is to be sentenced in December.
Prosecutors have called this the most horrific case of child exploitation they have seen.
Worman is alleged to have abused 12 children over a nine-year period. Investigators say they have uncovered more than 1.2 million still images and 11,000 videos from hard drives, CDs and DVDs belonging to Worman.
Rotella told the jurors that their reaction to those images had been much different from Worman's. They turned their eyes away, but Worman "was riveted," Rotella said, pointing to the defendant. He couldn't take his eyes off the screen and watched "every second of every video and every image," she said.
Rotella said the jury must focus on whether the prosecution had proved that a child was depicted in the videos, that there was sexually explicit conduct, that the defendant participated in the manufacturing of the child pornography, and that the images were produced using materials in violation of laws governing interstate and foreign commerce.
"Hold him responsible for everything he has done to those children," said Rotella.
Mark Cedrone, Worman's court-appointed lawyer, counseled the jury to ignore the ugliness of the case.
"I assume right now you hate John Worman," Cedrone said during his closing argument. "Guess what: He is not on my dinner-invitation list either."
Cedrone held up a collection of statutes and reminded the jurors that they were a half-block from where the Constitution was written. He told them they were not there to "render vigilante justice."
Cedrone said the prosecution did not prove its case that all the equipment used in the production of the images had been obtained through interstate or foreign commerce.
"He has a right to go to trial," said Cedrone. Cedrone said it was up to the jury to defend the rules of a civil society and the Constitution. "Do your job," he said.
As the jury left the room to deliberate, others in the court stood, as is customary. Worman remained seated, staring straight ahead.
Contact staff writer Mari A. Schaefer at 610-892-9149 or mschaefer@phillynews.com.
