Veronica and Archie set a trap for a swindler using a phony chivalry line to swipe women's expensive coats.; Veronica is using Reggie to make Archie sweat over whether she'll go with him to the dance. She browbeats Betty into promising not to tell Archie her plans.; Mother Nature keeps ruining Veronica's expensive coiffures.; All the boys are flipping over the sexy new Chemistry class substitute teacher and all the girls can't stand it.