Criminal Minds: Today is AJ Cook's last day working on Criminal Minds. A horrible day for all the fans of Criminal Minds. Thank you AJ for your wonderful performances these past five seasons and the wonderful energy you have shared with the fans. You are a class act and we all hope that you know that we will be behind you rooting for you with all your future projects. You will be sorely missed on Criminal Minds and you are irreplaceable. Thank you for entertaining us the past five seasons. All our best wishes, love and hugs!