When three bodies are found with animal and human bite marks in a shallow grave near Milwaukee, the BAU has many puzzling questions to answer. Meanwhile, Reid and Garcia work out for a company fitness test, but try to hide their preparation from Morgan.
- Phil Abrams - Doctor Weinstein
- George Alvarez - Officer Kowalski
- Chris Coy - Russell Holmes
- Brittani Ebert - Soccer Mom
- Stone Eisenmann - Hunter Cunningham (voice)
- Ayana Hampton - Jogger
- Christopher Hatfield - Mr. Foley
- Shawn Kathryn Kane - Nanny
- Tammy Lauren - Liz Foley
- Dana Melanie - Gloria Wilson
- Steve Monroe - David Wade Cunningham
- Jacqueline Scislowski - Foley Daughter #1
- Hannah Swain - Foley Daughter #2
- Chloe Wepper - Barista
- "Bambadam (Original Club Mix)" by Jason Rivas
- Spencer Reid: "It is more important to know what sort of person has a disease than to know what sort of disease a person has." — Hippocrates
- Derek Morgan: "True friendship multiplies the good in life and divides its evils." — Baltasar Gracián
- Promos for the episode advertise the unsub as turning his victims into "zombies". Considering the unsub's true M.O., the episode could be an obscure allusion to a 1977 Canadian horror film, also titled Rabid, which involves a woman whose unique plastic surgery is capable of turning people into "rabid zombies" whose bites spread the disease.
- Stone Eisenmann, the child actor who voiced Hunter Cunningham, previously appeared in Criminal Minds, starring as young Billy Flynn in the Season Six episode "The Longest Night".