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Criminal Minds: Evolution Kills Off Longtime Character Will LaMontagne Jr.

The May 15 episode marks a pivotal narrative shift, focusing on JJ Jareau's emotional aftermath and A.J. Cook's performance as the series explores new depths.

A.J. Cook as Jennifer ‘JJ’ Jareau, Adam Rodriguez as Luke Alvez, Paget Brewster as Emily Prentiss, Aisha Tyler as Dr. Tara Lewis, RJ Hatanaka as Tyler Green, and Kirsten Vangsness as Penelope Garcia in "Criminal Minds: Evolution."
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Overview

  • Will LaMontagne Jr., portrayed by Josh Stewart since 2007, was written off in Season 18, Episode 2 of Criminal Minds: Evolution.
  • The character's death was caused by a rare spontaneous rupture of the inferior thyroid artery aneurysm, as revealed in the episode.
  • Josh Stewart had previously announced his departure from the show in January 2024, making this a planned narrative decision by showrunner Erica Messer.
  • The storyline will delve into JJ Jareau's grief, offering A.J. Cook a chance to showcase her dramatic range as her character navigates personal loss.
  • The decision reflects the creative freedom of the Paramount+ reboot, which builds on the legacy of the original series while exploring more serialized storytelling.