He never molested his kids or even raised a hand to them. He did torture himself in front of them and got them to punish him under the guise of playing a game though. His first wife took off with another man and he was married(not legally) 3 times after that.
After his confession, Detective King had a final question: What caused him to do this horrible thing?
"You know," Fish answered. "I never could account for it."
"In about 2 hours, it was nice and brown, cooked through. I never ate any roast turkey that tasted half as good as his sweet fat little behind did. I ate every bit of the meat in about four days. His little monkey was a sweet as a nut, but his pee-wees I could not chew. Threw them in the toilet."
Fish told him: "I always had a desire to inflict pain on others and to have others inflict pain on me. I always seemed to enjoy everything that hurt."
Wertham told "experiences with excreta of every imaginable kind were practiced by him, actively and passively. He took bits of cotton, saturated them with alcohol, inserted them into his rectum, and set fire to them. He also did that with his child victims."
Fish confided in Dr. Wertham a long history of preying on children -- "at least a hundred." Fish would bribe them with money or candy. He usually chose African-American children because he believed that the police did not pay much attention when they were hurt or missing.
Initially, Dr. Wertham had some concerns about whether Fish was lying to him, especially when he told the psychiatrist that he had been sticking needles into his body for years in the area between the rectum and the scrotum: "He told of doing it to other people too, especially children. At first, he said, he had only stuck these needles in and pulled them out again. Then he had stuck others in so far that he was unable to get them out, and they stayed there." The doctor had him X-rayed and sure enough, there were at least twenty-nine needles in his pelvic region.
"He had visions of Christ and His angels....he began to be engrossed in religious speculations about purging himself of iniquities and sins, atonement by physical suffering and self-torture, human sacrifices....He would go on endlessly with quotations from the Bible all mixed up with his own sentences, such as ' Happy is he that taketh Thy little ones and dasheth their heads against the stones."
When Dr. Wertham asked if he meant that he was insane. Fish answered, "Not exactly...I never could understand myself."
Psychosis seemed to have galloped through Fish's family history from what Dr. Wertham could ascertain: "One paternal uncle suffered from a religious psychosis and died in a state hospital. A half brother also died in a state hospital. A younger brother was feeble-minded and died of hydrocephalus. His mother was held to be 'very queer' and was said to hear and see things. A paternal aunt was considered 'completely crazy.' A brother suffered from chronic alcoholism. A sister had some sort of 'mental affliction.'