You need more data

As you brood over the day's events one conclusion is inescapable. You need to know more about the school, it's teachers and it's students if you are to make a profit here, stay safe, and keep Tony Dogs off your back. That will take time, but you should let no opportunity go to waste.

You decide that the time to start would be tonight. You have little doubt that some of these highly strung young women might take advantage of the last weekend before classes begin to get into some mischief, and if you're lucky you'll catch someone in a compromising position that could net you some rewards.

With that happy thought you go upstairs to change, dressing in black pants and turtleneck. You pull a black balaclava over your head, then roll it up so it looks like a watch cap. In shadow or darkness you'll be all but invisible, and if you pull the balaclava down, unrecognisable as well. You put your phone in one pocket, and after a moment's consideration a short bladed folding knife in another.

Confident and ready, you turn out the lights in your cottage and step out into the darkness.