I'm trying to remember what this old PC/DOS game was called. It was about a school and some evil mad scientist that was trying to destroy it. You had until midnight to stop him otherwise it was kablooey. To stop him you had to first find him and to do that you had to wander through the school looking for robots and take a picture of them. Then you had to identify something in the picture that would tell you if it was a robot or the scientist in disguise. Once you had enough clues or whatever you could catch the scientist.
I used to play it all the time when I was in fourth grade (which was back in 94' or so) and I just can't remember the name. Any help with this would be greatly appreciated. Thanks!