Hanna stomps through the Rosewood Hospital looking for room 312. Spencer tries to slow her down and talk her through a plan. They are going to replace the note in Garrett's Mom's room with a fake note, meant to lead whoever Garret is working with to a location where the Liars will be waiting. Spencer knows all that part of the plan, but points out that they should probably pick out a location before stomping into the coma room. Hanna quickly picks the church. Apparently, the girls assume that whoever Garrett is trying to communicate with on the outside is also A. And Spencer is assuming that Lucas is A, because he doesn't take showers. Or because they found those pills used to drug Emily amongst his things. Probably both.
Sweeney: Why are they finalizing this plan at the hospital?