As Karen is quizzed by a PI over the death of her lover, Alex's friendship with Joss moves on. Meanwhile, Savi awaits the results of her paternity test and tries to hide her pregnancy from Harry.moreless
After an engineering student at CalSci is found dead from an apparent suicide, Charlie convinces Don to launch an investigation after he reads the student's thesis which asserted that the architecturally magnificent Cole Center in Los Angeles is structurally unstable. Although reluctant at first, Don and his team discover that the student's findings were correct and uncover a dangerous and surprising conspiracy. Meanwhile, Alan prepares for a first date and convinces Don and Terry to join them, hoping they might rekindle their old romance.moreless
Hanson goes on the lam after learning he's the lead suspect in Officer Tower's death, while Booker teams up with Officer Tower's partner to conduct the official investigation into the shooting and locate Hanson.moreless
A kidnapped toddler is found safe in a hotel room with a murdered prostitute who had given up the girl for adoption at birth.