Emily Kosloski

The members of the BAU team search for a suspect who may have witnessed abuse as a child; Kate is worried when her niece and a friend make plans with a boy they met online.

A woman researching her family history learns that her great-grandmother was murdered in 1929 and the case was never solved, prompting Lilly to take a look.

Ben reveals the details of his past to his therapist and his training officer; when Dewey (C. Thomas Howell) is star-struck by a famous, self-absorbed actor (Tom Sizemore), he decides to party with him instead of booking him.