ELEMENTARY Season 2 Episode 4 Poison Pen Photos : “Poison Pen” – When the CEO of a financial consulting company is poisoned to death, Holmes and Watson are called upon to track down the killer. Meanwhile, a woman from Sherlock’s past emerges as a possible suspect, on ELEMENTARY, Thursday, Oct. 17 (10:01 – 11:00 PM, ET/PT) on the CBS Television Network.
