Mission: Impossible
She wakes and takes a minute to stretch. If you didn't know better, you might think she was putting on a show for you. The enemy agent then slips into some lingerie and starts laying out firearms on the bed. You suspect this has something to do with her mission here, supplying the rebels with weapons.
Suddenly, bright lights come on at the head of the bed, leaving her a shadow, and the psychological advantage as she turns to the window and speaks. "You may as well come inside, Mr Phelps. The front door is open."
Now you realize she's known all along, and perhaps you're not being as stealthy as you thought.
The prudent thing might be to run away and try again later. If this is what you decide, then leave the tease, you failed in your mission.
If you decide to enter the house (using all the precautions, of course) then go ahead and hit continue.