A nightly gathering. An unexpected murder. An unusual investigation. Adrian Adams is a college graduate who had aims of accomplishing something truly great with his life. However, he never had much luck and now finds himself working a dead-end job at a grocery store. In the evenings, Adrian drives to Harvard University to meet with his friend, world-renowned social anthropologist, Dr. Emma Burgess. Adrian's twin brother, Timothy, tags along in order to take part in their ritual of discussing mysteries and solving them through the process of deduction. However, on this particular night, they hear a scream down the hall. Upon arriving at a classroom, they discover that Jonathan Delaney, Professor of Medical Anthropology, has been murdered—and one of the four college students present at the scene of the crime must be the killer. Dr. Burgess and the Adams brothers urge that they do not call the police. Instead, the three take it upon themselves to solve the murder on that snowy night, in one isolated room. Can the power of deduction reveal the murderer before anyone else falls pray?