You start to browse around the shop. You came in here for something. You needed it. It was vital ... what was it. You forget.
You feel that you're being watched and turn. The eyes are following you around the store. Literally. They glance to the left to an archway that leads to another section of the store. You hadn't seen it before.
The eyes flick to the arch again as if telling you to go that way. You struggle to break the eye contact. What was it you needed? Why were you drawn into the store?