Sometimes "love and intimidation" can persuade a spouse to blindly believe the other -- a mindset that is not necessarily pathological, according to violence expert Tom Capozzoli, who is still intrigued with the Anderson-Bishop relationship.
"He said it was a 'normal' family," said Capozzoli. "But what does that mean? The reason he may be talking now is he has nothing to fear. I would really be interested to know more about this 'normal' family."
"I think mental illness is a real logical defense," said Judith Armstrong, who lives next door to Bishop and Anderson on McDowell Street in Huntsville. The families were in a dispute over property lines before the arrest.
"We didn't know them well because we have grandchildren and they have little children, so we don't move in the same circles," she told ABCNews.com. "But Jim seemed very quiet and Amy was quite assertive."
"I am stunned," said Armstrong, 58. "She always came across as needing to be right, but I didn't think she was capable of violence."
ABC's information specialist Gerard Middleton and Melissa Lenderman contributed to this report.