The detectives work on two cases. One involves multiple homicides at a restaurant. The second case opens with an amputated leg found in a dumpster and ultimately leads to the owner of the missing limb, found dead in his own bed.
A suspicious brief case is found at a mercantile marker and a bomb squad is immediately summoned to the scene where Dectective Taylor is using a robot to lift a fingerprint off of it. Meanwhile, an apparent suicide takes place at a church.
A police officer is shot in the middle of Central Park from a building way outside the park. He dies right away. Sadly, the bullet, an important piece of evidence, is buried into the officer's horse, Blue. Removing might end Blue's life.
Mac and Stella investigate the murder of a woman who was stabbed in the heart with a wooden stake. The police arrest a woman who was kneeling over the body with blood on her, but Mac isn't convinced that she committed the crime.