In “Fugitive,” we learn a lot more about the magical stick Nick and Monroe (Silas Weir Mitchell) found in last season’s “Into the Schwarzwald.” But things hurtle forward and get downright cutthroat. The fury is roiling beneath the surface as Renard pits Nick’s own precinct against him. Even Hank (Russell Hornsby) and Wu (Reggie Lee) are caught in the cross-hairs of Renard’s vengeance.