The team heads to Grand Rapids to investigate two ritualist murders on Criminal MInds. "Alchemy" is the 20th episode of the show's ninth season.
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Criminal Minds Season 8 Episode 20 Quotes

J.R.R. Tolkien wrote "I will not say do not weep, for not all tears are an evil".

Reid

Maeve: Dance with me.
Reid: Why?
Maeve: I want to hold you once before I'm a ghost of a memory.