In this story, you take the place of JJ, when the BAU is chasing Everett Lynch (Season 14/Season 15). When JJ and Spencer are in the bank with the unsub, and JJ tells Spencer that she loves him.

The unsub finally pointed the gun at Spencer's head. "Tell your biggest secret, or he dies!"

(Highly recommend if you use 'Unsub:' if it's someone else speaking)