what happened to emily prentiss in season 8
Emily Prentiss In the season seven finale, Prentiss receives an offer to run Interpol's London office. While still pondering her decision on the offer, Prentiss decides to leave the BAU. In the season eight premiere, Morgan and Garcia mention seeing her while they were in London and that Emily is doing fine.
Definitely, Maybe Emily moves to New York City, and she and Will rekindle their relationship after a run-in at a party of Summer's they both were attending. Maya correctly guesses that "Emily" is her mother. Maya states that it is unfortunate that the story has a sad ending, but Will explains that the story has a happy ending: Maya.