The Leviathan Elementary : Season 1 Episode 10
TV-14 CBS 1h 00m
Aired: December 13th, 2012 @ 10:00 PM EST on CBS
Sherlock is called in to investigate when a supposedly uncrackable bank vault called “The Leviathan” is breached. Meanwhile, Joan is pleasantly surprised when Sherlock meets her family and defends her choice to become a sober companion.
