Castle studied Jerry's original crime spree for his novel When It Comes to Slaughter. Captain Roy Montgomery was on the original task force to capture him. He learns the habits of his victims and gains their trust through different disguises, such as a security guard or cable repairman, to gain access to their apartments. Jerry began his killing spree in 2006 by claiming six lives. It was noted on his FBI profile, though, that he did have a dysfunctional relationship with his mother. Although this is merely speculation by Richard Castle and not confirmed by Jerry himself, he does not deny it either. Despite this, however, Jerry still loves his mother (or mother-figure) and, as an homage to her, leaves his victims looking peaceful. She claimed Jerry was a 'hellion' despite her attempts to provide a loving home, and ultimately relinquished him to the system at the age of nine.īitter at being sent into uncaring foster care, Jerry ended up becoming a serial killer by killing women who look like his biological mother and especially Gretchen as a way of 'getting back at her'. What is known is that with his father having abandoned him and died later as well, Jerry was raised under the care of his father's girlfriend, Gretchen Cutler. Apparently, as a child, Jerry Tyson was raised by a single mother: a beautiful blonde who later didn't want him and eventually died of a drug overdose.