Brutal murders in California have the BAU searching for a killer who is targeting women. Meanwhile, Kate becomes concerned when her niece, Meg, makes a date with a friend to meet a boy they met online.
- Lisa Brenner - Greta Thomas
- Dexter Cross - Conner Thomas
- Joe Fiske - Frank Holden
- Greg Grunberg - Chris Callahan
- Ty Haile - Young Peter Folkmore
- Emily Kosloski - Karen Holden
- Martin Kove - John Folkmore
- Jennifer Marks - Heather White
- Jessica Martin - Lauren White
- Taylor Mosby - Markayla Davis
- Brian Poth - Peter Folkmore
- Hailey Sole - Meg Callahan
- Tyee Tilghman - Detective Davenport
- Livia Treviño - Doctor Felicia Campo
- The September 11 Hijackers
- Raymond Fernandez and Martha Beck
- "Una Donna a Quindici Anni" by Lorenzo da Ponte
- "Great Big Bundle of Love" by Brenton Wood
- Kate Callahan: William R. Alger once said, "Men often make up in wrath what they want in reason."
- Aaron Hotchner: "Nothing can drive one closer to his own insanity than a haunting memory refusing its own death." Darnella Ford
- Greg Grunberg previously costarred with Jennifer Love Hewitt in the drama series The Client List, while Brian Poth costarred with Hewitt in the kids' show Kids Incorporated.
- Ty Haile, the child actor who portrays the young Peter Folkmore, previously appeared in Criminal Minds, starring as one of Joe Muller's sons in the Season Five episode Retaliation.