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 It was a simple plan: A college student would crawl through an air duct at a building housing an instructor’s office in the wee hours, lower himself from the ceiling and, with the help of a cohort, steal a copy of the final exam for a statistics class. 
 
 But the odds were never in their favor. 
 
 The instructor at the University of Kentucky, who was working very late, had gone out for a midnight meal and returned just in time to derail the plan, according to a university spokesman. 
 
 The episode unfolded around 2 a.m. on Wednesday at the university’s campus in Lexington, Ky., the spokesman Jay Blanton, said. 
 
 One of the students, Henry Lynch II, had made his way through the duct — a distance of less than 10 feet — to the third-floor office of the instructor, John P. Cain, Mr. Blanton said. Mr. Lynch made his way from the ceiling and lowered himself the eight feet to the floor. 
 
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 Mr. Blanton noted the office had file cabinets and other furniture that could serve as footholds to help the climb down from the drop ceiling, but it was not clear how or where Mr. Lynch gained access to the duct.
– If a University of Kentucky junior had paid a little more attention during statistics lectures, he probably wouldn't have had to try to steal the exam—and he would have been better able to judge the odds of his scheme succeeding. Henry Lynch II, a 21-year-old majoring in biosystems engineering, planned to steal the final statistics exam by crawling through the ducts of a Lexington university building and lowering himself into an instructor's office, the New York Times reports. The university says Lynch and accomplice Troy Kiphuth, who Lynch let into the room after making his way through the ducts, were caught in the act around 1:30am Wednesday after instructor John Cain unexpectedly returned from a late-night meal. A university spokesman says after Cain found the door blocked, he "yelled out that he was calling the police and then the door swung open and two young men ran down the hallway." But Lynch, worried that Cain had recognized him, returned after police got there and confessed, the Lexington Herald-Leader reports. He admitted that he had made his way through the ducts to Cain's office twice before: at 6pm the previous day in a failed attempt to find the final exam, and earlier in the semester, when he managed to make off with another exam. It's unclear how he was able to get into the air-duct system. Lynch and Kiphuth, who is not in Cain's class, have both been charged with felony burglary. (The author of Freakonomics devised an algorithm to catch cheating students.)