An explosive event sets the stage for emotional shifts in the lives of the detectives: Fitch tries to rebuild his relationship with his 12-year-old son, Bobby (Vadim Imperioli); Longford begins the paperwork needed for his retirement; Washington focuses on his newborn son; Mahajan retreats further from an arranged marriage, and Sanchez may be contemplating a new relationship. But their plans are interrupted when Longford and Mahajan investigate the murder of a young graffiti artist, Jordan Loney. There seems to be a clear suspect in the case, but Fitch is intrigued by some artistic doodles that eventually lead to a suspect with a disturbing history and a darker motive. Finally, when Fitch's ex-wife flies to Detroit to leave their son for a planned visit, she drops some shocking news on her ex. Little does Fitch know that he, his son and the other detectives will soon all be in great jeopardy.