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.
Emily Thorne David, who has cancer, is released on compassionate grounds before dying of the disease. Months later, Emily marries Jack and they sail off on their honeymoon. In a voiceover, she remarks that karma spared her from suffering the consequences of her actions, and asks the viewer to consider her story as they embark on a journey of revenge of their own.