23 across
Rex
probes
risky
rooms
for
guests
(8)
Rex probes risky rooms for guests (8)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Rooms for guests is your definition. "Risky" gives you PARLOUS, then Rex (that's R) is "probed" into it — slipped in just before the final S — to give you PARLOURS.