Fool Me Twice

S1 E12: After a man is shot multiple times and left for dead, and a kilo of diluted heroin is found in his car, Antonio (Jon Seda) 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 (Philip Winchester) is hesitant to let Nagel (Joelle Carter) be involved in the case, as she has a close connection to the victim. Also starring Carl Weathers and Monica Barbaro. Guest starring Gary Basaraba, Dylan Walsh and Tim Kang.