The BAU travels to Albuquerque to investigate the case of a serial killer who impregnates young women and murders them after they have given birth. Meanwhile, Morgan is puzzled when Hotch begins giving him tasks on his own.
- Jayne Atkinson - FBI Section Chief Director Erin Strauss
- Liz Burnette - Maria Ortiz
- Mark Berry - SWAT Commander
- Van Epperson - Medical Examiner
- Max Gail - Conrad Winmar
- Lyn Alicia Henderson - Doctor Kathleen Dekeyser
- Hallee Hirsh - Carol
- Frieda Jane - Linda Reimann
- Spencer Kramber - ND Detective
- Jonathan Nail - Doctor Marvin Saul
- Diana Scarwid - Jane Winmar
- Lauren Skirvin - Kristie Taylor
- Simon Sorrells - Young Man
- Riley Thomas Stewart - Michael Winmar
- Erik Sundquist - Robert Reimann
- Mae Whitman - Julie
- "Such a Beautiful Thing" by Chris Mills
- Jennifer Jareau: Journalist William D. Tammeus wrote, "You don't really understand human nature unless you know why a child on a merry-go-round will wave at his parents every time around and why his parents will always wave back."
- Mae Whitman, the actress who portrays Julie, starred in a similar role in the film The Factory, which has an almost identical storyline to the episode.