Highlights from the Sixteenth Episode of Season 1 of Elementary

Sherlock (Jonny Lee Miller) encourages Joan (Lucy Liu) to learn self-defense, on ELEMENTARY, on Thursday, Feb. 14 (10:00-11:00 PM ET/PT) on the CBS Television Network. Photo: Jeffrey Neira/CBS ©2013 CBS Broadcasting, Inc.

Sherlock and Gregson (Aidan Quinn) investigate what they believe will be an open-and-shut case after Detective Bell is attacked, on ELEMENTARY, on Thursday, Feb. 14 (10:00-11:00 PM ET/PT) on the CBS Television Network. Photo: Jeffrey Neira/CBS

Jon Michael Hill and Lucy Liu in "Details."

Sherlock (Jonny Lee Miller) investigates what he believes will be an open-and-shut case after Detective Bell is attacked, on ELEMENTARY, on Thursday, Feb. 14 (10:00-11:00 PM ET/PT) on the CBS Television Network. Photo: Jeffrey Neira/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved

Sherlock encourages Joan (Lucy Liu) to learn self-defense, on ELEMENTARY, on Thursday, Feb. 14 (10:00-11:00 PM ET/PT) on the CBS Television Network. Photo: Jeffrey Neira/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved

Jonny Lee Miller and Lucy Liu on the set of ELEMENTARY, on Thursday, Feb. 14 (10:00-11:00 PM ET/PT) on the CBS Television Network. Photo: Jeffrey Neira/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved