mike ramsey is the district attorney in butte county, california. >> what we're talking about was ander hours. >> reporter: this past spring, the shatzs pleaded guilty to the killing of their daughter lydia and seriously injuring her older sister zariah. these images some too horrific to show. the shatz said they also regularly beat their other children. we're covering their face toss protect their privacy. >> the book was there. underlined, underscored. >> there's no question in your mind that this book by the pearls influenced the shatzs to boat, brutalize and terrorize their children? >> none at all. >> no question? >> reporter: but the pearls feel differently, saying their book rejects parents losing control and acting out of anger. >> so you're not accepting any blame. >> absolutely not. >> how scared were you that there would be blame pointed at you? >> i don't think we were scared at all. there's never been a suggestion by anyone that someone's lost control because of what they read in our book. >> reporter: the district attorney clearly disagrees and puts blame on the pearls f

mike ramsey is the district attorney in butte county california. >> as we're talking about is and werged torture. torture over hours. this past spring they pleaded guilty to the killing of their daughter lydia and seriously injuring her older sister. these are the photos of the sister's wounds. the marks left by the rods. many images too griesome to show. the couple said they regularly beat the other children. we're covering the faces of the survivors to protect their privacy. >> the book was there and underlined in various areas. >> there's no question in your mind that this book by the pearls influenced the couple to beat, brutalize and terrorize the children? >> none at all. >> no question? >> no question. >> but the pearls feel differently saying the book rejects parents losing control and acting out of anger. you're not accepting any blame? >> absolutely not. >> are you scared there would be blame pointed at you? >> we weren't scared at all. there's never been a suggestion that someone's lost control because of what they read in our book. >> the district attorney clearly disagre

mike ramsey is the district attorney in butte county california. >> as we're talking about is and werture over hours. this past spring they pleaded guilty to the killing of their daughter lydia and seriously injuring her older sister. these are the photos of the sister's wounds. the marks left by the rods. many images too griesome to show. the couple said they regularly beat the other children. we're covering the faces of the survivors to protect their privacy. >> the book was there and underlined in various areas. >> there's no question in your mind that this book by the pearls influenced the couple to beat, brutalize and terrorize the children? >> none at all. >> no question? >> no question. >> but the pearls feel differently saying the book rejects parents losing control and acting out of anger. you're not accepting any blame? >> absolutely not. >> are you scared there would be blame pointed at you? >> we weren't scared at all. there's never been a suggestion that someone's lost control because of what they read in our book. >> the district attorney clearly disagrees and puts blam

michael ramsey is the district attorney in butte county, california. >> we are talking about was andharged torture, torture over hours. >> reporter: this past spring the shots plead guilty to the killing of their daughter lidia. and seriously injuring her older sister. these are photos of some of the sister's wounds, the marks left by the rods, many of the images too gruesome to show. they also beat their other children. we're covering the faces of the survivors to protect their privacy. >> the book was there. it was underlined, underscored and -- >> there's no question in your mind that this book by the pearl influenced the shots to beat, brutalize and terrorize the children? >> none at all. >> reporter: no question? >> no question. >> reporter: the pearls feel differently, saying their book rejects parents lose control and acting out of anger. so you're not accepting any blame? >> absolutely not. >> reporter: how scared would you be that there would be blame pointed at you? >> i don't think we were scared at all. there has never been a suggestion to anyone that someone's lost contr