Author Timothy Appleby said convicted murdered Russell Williams had dinner and learned French with one of his victims.
In his book A New Kind of Monster: The Secret Life and Chilling Crimes of Colonel Russell Williams, Appleby said that Williams wasn't being truthful to police when he said he barely knew Marie-France Comeau.
"This was part of his M.O. of making you think he didn't plan any of this stuff, he just did it," he said in an interview Friday.
Another revelation from his book was that police found child pornography on Williams' computer. but didn't lay any charges.
Appleby said those charges would have been a dealbreaker for Williams, as he wouldn't have pled guilty to his other charges.
"Let's say the police had decided to lay these charges," he said. "We would have had at least two years of preliminary inquiry, a trial, all the detail would have come out and the families would have been put through a terrible ordeal."
"At the end of it the result would have been the same; he'd have been convicted and given two life sentences."
A New Kind of Monster is in stores now.
