|Season 12, Episode 11|
|Air date||February 1, 2017|
|Written by||Bruce Zimmerman|
|Directed by||Oz Scott|
"Seek and Destroy"
"A Good Husband"
The BAU is called to Tampa, Florida, to investigate when bizarre hieroglyphs are found on the bodies of suicide victims, and realize they are dealing with a very unusual killer. Meanwhile, Reid decides to take his mother out of a clinical study early to bring her home with him.
- Andy Cohen - Kevin Hilliard
- Will Finley - Mike Bollinger
- Dia Frampton - Jill Flanagan
- Drea Garcia - Beth Sims
- Joyce Guy - M.E. Joan Grayson
- Bjarne Hecht - George Findley
- Eric Henry - Bryce Jarvis
- Jane Lynch - Diana Reid
- Kailena Mai - Amalia Banks
- Beth Maitland - Eleanor Parsons
- Rudy Marquez - Owen Sims
- Angela Robinson Witherspoon - Cassie Campbell
- Spencer Reid: "We must remember that Satan has his miracles, too." John Calvin
- Spencer Reid: "Time moves in one direction, memory in another." William Gibson
- Surface tension is the elastic tendency of a liquid's surface, which is caused by the attraction of particles residing in the surface layer to other particles residing in the same layer. This results in a minimized surface area and allows insects that are denser than the liquid to float and walk on its surface.
- The aerial shot of Tampa, Florida, featured in the episode is actually an aerial shot of Orlando, Florida.