After a man is shot multiple times and left for dead, and a kilo of diluted heroin is found in his car, Antonio discovers other similar cases where murder victims were found with the same type of adulterated drugs. Ultimately, the narcotics detectives involved in the case-one a decorated hero-appear to be the common thread. Meanwhile, Stone is hesitant to let Nagel be involved in the case, as she has a close connection to the victim.

A crane collapses at a construction site and kills the son-in-law of wealthy real estate developer, Frank Linden. Nagel and Antonio, with the help of and CFD Chief Boden discover that the collapse wasn't actually an accident. The team digs into Linden, who has made many enemies, more dangerous friends, and is accustomed to using his money to get his way.