Eric goes in and looks and listens out the window:
Spot = 1d20+5, Listen = 1d20+0
Rolled 1d20+5 : 16 + 5, total 21
Rolled 1d20 : 17, total 17
If he doesn't see or hear anything immediate, he checks the room for any evidence:
Search = 1d20+0
Rolled 1d20 : 8, total 8