Mac and his team work to find the murderer of a much beloved shopkeeper with Irish ancestry. The body parts have been strewn to mark the original boundaries of Hell's Kitchen and initial evidence seem to point to the murderer being a developer who is trying to buy out the old building owners to build new, larger shopping complexes. A counterfeit cigarette left behind at the crime scene, points our CSI's towards the Russian mob, who were running counterfeit cigarettes in markets in the neighborhood and their theory seems confirmed when a Russian courier and his car explode. Our CSI's arrest one of the young neighborhood men who bombed the Russian as retribution for the shopkeeper's death, but his confession suggests a more complex story to Mac. Mac realizes that a young bar owner pointed the bomber to the Russians when, in fact, he was responsible for the shopkeepers death. His father was part of the Irish mob and he wanted to not just maintain the old More...boundaries of Hell's Kitchen, but restore power of the Irish mob and killing the shopkeeper and blaming the Russians allowed his "protection racket" to grow.