Elementary "Tremors" Season 2 Episode 10 airs Thursday, December 5 2013 (10:01-11:01 PM, ET/PT) on the CBS Television Network. Episode Synopsis: Elementary Season 2 Episode 10 "Tremors" - When an investigation goes horribly wrong, Sherlock must testify in an official police inquiry which jeopardizes his and Watson's future with the NYPD, on ELEMENTARY, Thursday, Dec.