Like, lololol bringing a murderer to a high school to torture/interrogate him seems like...not the best choice, but okay. Won't be the first, second, or even 20th murderer this high school has seen. I also love that this show is finally confirming that Riverdale is not in the United States, nor even planet Earth, I bet.
Betty questions "Martin" (or whatever his name is) about the missing girls, which also causes her to flash back to her run-in with the Trash Bag Killer. Thankfully, Tabitha is not involved anymore for her own safety.