Every detective is haunted by their White Whale, the perpetrator who got away because the justice system failed. Billy Graves, once a rising star in his department and former member of a group of well-respected cops called the "Wild Geese," walks away from NYPD Homicide and joins the Nightwatch division, where his cases end when he clocks out— but his past comes calling when a seemingly straightforward murder case involving a White Whale unfolds, threatening his career, enduring friendships, and family.