Hotch is assigned as the team's grief assessor in Prentiss' death. A common theme among some on the team is who is acting as his grief assessor. Meanwhile, the team travels to Tampa, Florida, where a woman that morning entered a gun shop and shot four dead. When they arrive at the gun shop, the team realize that she brought her own ammunition into the shop and used one of the shop's own guns as the weapon. That shooting and two subsequent events show the BAU that she has some issue with authority. As they track her movement through Tampa, they also realize that she is not on the run but has a specific target that she needs to get to on this specific day. They have to figure out who that target is and the significance of the date in her life.