Law & Order: Criminal Intent (2001) : 5x2

Logan and his new partner, Barek, investigate a series of robberies in mom-and-pop jewelry stores that are escalating in the level of violence. After a home investigation leads them to a young junkie, Barek and Logan are soon led to a mother-and-son team of criminals. They soon realise that the mother is the one pulling all the strings. Logan is uncomfortable when Barek uses his past to get through to their suspect.