Derek O'Neal is a fictional character portrayed by Cullen Wheeler in the TV series Elementary.
They appear in 1 episodes out of a total of 154 aired
Episodes1
Up to Heaven and Down to Hell
episode S4.E15 march 2016When Watson runs into Captain Gregson and his secret girlfriend, a former NYPD officer, she inadvertently sets the couple's breakup in motion. Also, Holmes and Watson investigate the murder of a wealthy woman who left her considerable estate solely to a beloved dog.
