About Elementary Season 7, Episode 4 : Red Light, Green Light

An explosion at a traffic stop puts Holmes and Watson on two separate tracks of investigation as they try to determine whether the attack was gang-related or a terrorist attack. Holmes and Watson suspect there is more for them to discover regarding the recent attack on someone within their inner circle. Guest Stars: Jon Huertas, Mac Brandt, Sam McMurray, Maureen Sebastian, Rob Bartlett, Heléne Yorke, Nick Choksi, David Christopher Wells, David Rossmer, Quentin Earl Darrington,