Greg Callahan is a statutory rapist and kidnapper, who convinced his 13-year-old neighbor, Laura Moore, to lie and say that she was being molested by her father Douglas, which resulted in Laura's older sister Britney murdering him.
Background[]
Greg was neighbors to the Moore family and got along well with them. He also had a girlfriend named Susan. Unknown to all, he was really a pedophile who was in a romantic relationship with Laura. Greg manipulated Laura into saying her father was abuser, to which she did and relayed to her sister Britney. Because of this, Britney flew into a rage and murdered her father to protect her sister from him.
A Story of More Woe[]
The Moore sisters were put in Greg's custody because of a fake will he created in order to continue his status with Laura, but his ploy was discovered, and the sisters were removed. As a result, he tried to go around it. However, SVU got Laura to admit that she and Greg love each other and inform Britney after she was detained. Realizing the truth, she decided to help SVU catch Greg. Greg met Britney at a diner, assuring her that he will get custody of her and Laura. Britney tells him that her sister hasn't been the same and Greg assures her that things will be fine. However, Greg became uneasy when Britney revealed her belief that her sister might be pregnant and that Britney tells Greg that she wants to get the child's DNA tested to confirm its for her father, as Greg stops her and says it's not a good idea, knowing he was in fact the father.
Britney caught onto this and questions him on why he slept with her sister, as he states she is very mature. She flew into a rage and stabs him in the cheek for making her sister lie on their father and making her kill him. When the Detectives bust in, Greg begged for help with Fin telling him to be quiet and taking the bleeding Greg away and Benson consoling Britney. He was treated for his injuries and charged for statutory rape and proxy murder, as his actions led to Britney killing her father. Peter Stone later revealed Greg took a plea of 25 years of statutory rape and conspiracy to commit murder. He was then convicted and imprisoned for his crimes.