When Charlie and Larry come across a crime scene, Charlie realizes that he knows the dead student. The police believe Finn Montgomery committed suicide, but when Charlie disagrees, Don agrees to look into it. The autopsy report comes back inconclusive, and Don has to break the news to Charlie that the FBI can't help with the case anymore. Meanwhile, Charlie finds research on the architecture of Gar Haybridge and especially the Cole Center Building. He decides to look into that for clues into Finn's death. Alan forces Don to accompany him on a date. Even though he tries to get out of it, Don ends up eating with Alan and Jill. During dinner, Charlie calls to say that he's found a possible motive for Finn's murder. He had been researching, and had uncovered the fact that the Cole Center building was vulnerable, due to high winds. Armed with a motive, Don and the team start an investigation into the building and its owner. They soon find that a few workers have been making big bucks by using shoddy construction and pocketing the extra money. Later, Finn's father brings the men a suicide note from Finn that indicates the pressure of his investigation was getting to him. He had stopped taking his medication, and did indeed jump off the bridge.