<P> The character was written back in after A.J. Cook told the writers she was pregnant, and as such JJ needed a love interest . In addition, one of the original plans for the season seven finale was to kill off Will . However, this idea was scrapped due to Paget's impending departure . </P> <P> Played by Cade Owens, Jack Hotchner is the son of series regular Aaron Hotchner, his first appearance being in "The Fox". His mother, Haley Hotchner, is killed in season five by George Foyet (a.k.a. "The Boston Reaper") but is spared when his father gives him a secret signal to "work the case" (hide in the trunk in Hotch's office). It is shown in season seven's "Painless" that Jack is being bullied . Jack is shown to have become good friends with Beth Clemmons, his father's new girlfriend . </P> <P> Played by Gia Mantegna (Joe Mantegna's daughter), Lindsey Vaughan is the daughter of a hitman and first appears in the season three episode 3rd Life . The BAU initially believe her to be a victim of "Jack" until they track her to a school and discover that she is a willing accomplice, input under the witness protection program after a hit ordered by Irish mobsters designed to kill her father wound up killing her mother instead . She reappears in season twelve as Diana Reid's nurse using the name Dr. Carol Atkinson . Reid immediately recognises her as Lindsey Vaughan and later remembers that she was Mr. Scratch's accomplice from the hotel in Mexico but is taken back to his cell before he can warn Diana, later being revealed that she is the accomplice, and girlfriend, of Cat Adams . </P> <P> Played by Mekhai Andersen (A.J. Cook's son), Henry LaMontagne is the first son of Jennifer Jareau and William LaMontagne Jr., his first appearance being in "100". </P>

Actress who used to be on criminal minds