Here's the official guide of Criminal minds season 8 episode 20 "Alchemy". This episode airs on Wednesday, May 1 on CBS.
THE BAU IS CALLED TO RAPID CITY WHEN TWO VICTIMS HAVE BEEN KILLED IN A RITUALISTIC MANNER, AND REID CONTINUES TO STRUGGLE WITH MAEVE’S DEATH --
Series Star Matthew Gray Gubler Directs the Episode
- The BAU travel to Rapid City after two male victims are discovered murdered in a ritualistic manner. Also, Reid continues to grieve over Maeve’s death.