A man is murdered in his defense attorney's apartment during a daring heist by two professional thieves who were after millions of dollars in jewels. Danny's former partner, James Benson, was working as a bodyguard for the attorney and was shot during the robbery but survived. One of the thieves is found dead near the helicopter used in their rooftop escape. Mac and the team find a duffle bag near the body containing a nano chip tracking device. Knowing both thieves had duffle bags, Adam reverses the signal in order to find the other bag and potentially the other thief. All are surprised when the signal leads to the body of a John Doe in their building with the nano chip embedded in his shoe. The John Doe is identified as Heath Kirkfield, when his girlfriend comes into the precinct to report him missing. She tells them Heath brought the bag of jewels home after they literally fell out of the sky while he was walking home. He was on his way to turn the jewels into the police when he was murdered. Sand containing gunshot residue found at the scene of the robbery and the discovery of the second thief killed execution style leads back to Danny's former partner, Benson. Benson had a string of bad luck since being pushed out of the NYPD. He was determined to change his luck and devised a plan to steal the jewels from the boss he despised and committed quadruple murder in the process. Danny must bring him down, knowing Benson is on his way to kill Heath's girlfriend, Jenny.