Okay, so what if Cas(sandra) is the daughter of the HOAP? When MC gets transported through the portal he has no idea that he's really just crossing the street. Cassie's bedroom is all witchy/gothy but there's no way her mom would allow any of that to be visible from outside because HOA, so even though the windows are covered with black velvet (or whatever) drapes that totally obscure the outside, between those and the glass there are nice acceptable lace curtains. One of them could even be peeking out a bit when he gets summoned. He's got a sharp eye for detail, but doesn't know what details are important so it can come to him later that something he noticed inside matches something he saw outside. Also ties Cassie into the whole thing. To do this I need to ditch the car ride to known destination/unknown location when he's Bound and Compelled. He'll need to go back to the original haunted house and take another Portal trip, hand over the phone, and be Banished Back to Whence He Came (next door). This actually provides a better opportunity for Cassie to screw up her protective pentacle as she thinks it's unnecessary now. Maybe she starts vacuuming, breaks the protective pentacle, gets distracted or called away while the transport pentacle is still active, and the Bad Imps get through. MC is thinking his part is done in this, just trying to figure out how to deal with a new phone bill for a phone he doesn't even have, then he sees the AMBER alert for Cassie and feels duty bound.... I still need a motive for the Imps Next Door to kidnap her to Hell. Progress.