Elementary

Season 4, Episode 13

Episode Title: A Study in Charlotte

Air Date: 2016-02-18

Overview:

Sherlock and Joan search for a murderer who used poisonous mushrooms to kill a botany professor and a group of the instructor’s students. Also, when Joan is disturbed by loud noise next door, she discovers her neighbor, Trent, is renting out his home through a vacation site that caters to hard partiers.