Related Clues:
- Security feature of some hotel-room doors
- Podcast's certainly complete in a site for threading
- Hotel door feature
- Cavity in the old house in the Spanish quarter
- Place to take a peek
- Certain face-covering feature
- Mask's opening
- Half of those in 4 down presumably dig it? In my view, I'd look through it before opening up!
- Opening for viewing
- Halloween mask feature
- Mask element