Talking With Serial Killers: World's Most Evil

This is the third book that the author has written/ I have read.
The most shocking case would have to be “The Hillside Stranglers” Kenneth Bianchi and his cousin Angelo Buono. Kenneth Bianchi possessed paedophillic, emotionally manipulative, sexually motivated/sadistic tendencies from a young age.
It is rare for anyone to have a sexual relationship at the age of 11 with a nine year old, it is disgusting, and morally wrong.
Some of the serial killers that were mentioned in the book, I haven't heard of before.
I struggled to read about John Cannan due to the horrific sexual assaults and murders of women, especially the sexual assault of a pregnant woman in front of her child and mother.
All the people that have been mentioned in the book are of similar ilk, emotionally manipulative, cold calculated, narcissistic/passive aggressive psychopaths/sociopaths, that committed pathetic or horrific crimes just because they could get away with literally murder multiple times until they were caught. Even when a psychopath/sociopath are caught, arrested and convicted for murder they still denied their involvement and use the whereabouts of their victims as leverage to gain preferential treatment or a deal for a lesser sentence in prison while on death row.
I think it is quite pathetic when a people decides to murder their spouse or family members/children just because their prefer someone else that they had a affair with.
Why not get divorced instead of murdering your spouse and children?
I also think it is pathetic to murder your spouse just because you want the life insurance policy, after they have been murdered. I think that anyone that already has murderous thoughts should get the help they need when they need it, at least this way a lot of crimes would be prevented if there was some type of pre-crime prevention.
If you have read the author's previous books then I would recommend this book, although the author does have a way of referring to the victims of crime in a dehumanising way which is offensive if not considered a bit insensitive. Normally a victim of crime, especially a murder victim, or a victim of a serial killer is not usually referred to as “it” or “the body” they were a living person and they have a name, however I understand why they their name would be changed to protect their identity, or for the sack of privacy of the living family members. Sometimes the author seems a bit biased or sexist towards women that are involved in crimes that involve murder or are a serial killer. Woman/men are sexually deviant, emotionally manipulative, violent, sadistic and cruel.
Both genders can possess no empathy towards their victims and they are are self-centred, their ego is inflated and they think very highly of themselves and their ability to ingratiate themselves into the lives of others where they don't belong or fit in and how they can deceive people easily.
They are the apex predators in society.