Stowell's wife of more than 40 years noticed her husband spent a lot of time on his home computer, according to federal court records. He was secretive about it. Once, she saw nude children on the screen when he forgot to cover it.

She told them she had never seen her husband act inappropriately around children. They had four grown kids of their own. But she recalled how Stowell was fired long ago from his job as principal of a school in Germany after allegations that he molested a boy.

Stowell's adult son told authorities that he found thousands of pornographic images of children on his father's computer after his mother asked him to take a look.

Some of the images found on Stowell's computer showed him with what appeared to be the same children shown in pornographic images and movies.

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