ElementarySeason 4 Replace imageEpisode number11Down Where the Dead DelightOverviewHolmes and Watson must search for a killer without any physical evidence to aid them after a bomb is detonated in the New York City morgue. Also, Watson is suspicious when an NYPD detective she’s in a grudge match with asks her to consult on a case.Air dateFebruary 4, 2016Runtime (min)45