Ep 12. M.

Elementary is a thrilling study of a modern day Sherlock Holmes, set in New York City. The show follows the life of Sherlock Holmes (Jonny Lee Miller), a former drug addict and a brilliant detective who has moved to New York to seek a new life. Alongside him is his partner in crime-solving and sober companion, Joan Watson (Lucy Liu), who is a former surgeon.

In season 1 episode 12, titled M., the duo delve into the case of a woman who has been murdered in a way that bears a striking resemblance to the ritualized killings of the serial killer, M. The killer’s modus operandi is that he records the sound of the victim's screams on a tape recorder during the crime, while leaving a cryptic message behind. Sherlock and Watson find themselves putting their skills to the test as they try to track down the elusive criminal.

The episode opens with Sherlock and Watson being invited to a briefing with Captain Tobias Gregson (Aidan Quinn) and FBI agent Gerry Coventry (Callie Thorne) about a recent murder that has occurred in the city. The victim is a woman named Emily Hankins, who had been killed in her apartment and her throat slit, with a strange symbol carved into her right wrist.

As the investigation progresses, they find out that the killer had been using a tape recorder to record the sound of the victim's screams during the attack. This leads the detectives to believe that the killer may be preparing a sound collage of his victims.

Sherlock and Watson then start to piece together the clues and identify the potential suspects. Their investigation leads them to a suspect named Cicero Frias (David Harbour), who fits the profile of the killer. However, the killer continues to elude them and they are unable to find any conclusive evidence to pin him down.

As the episode progresses, Sherlock’s past as a drug addict comes back to haunt him and he struggles to keep his addiction under control in the face of the stress of the investigation. Meanwhile, Watson continues to show her support for him, both in her capacity as his sober companion and as his friend.

The episode culminates in a dramatic chase scene, as Sherlock and Watson race to catch the killer before he claims another victim. The chase leads them to a hotel, where they finally come face to face with the killer himself.

Overall, Elementary season 1 episode 12, M., is a thrilling episode that keeps viewers on the edge of their seat. It is a well-written and well-executed episode that perfectly captures the mood and suspense of a classic Sherlock Holmes mystery. With strong performances from the cast, particularly Jonny Lee Miller and Lucy Liu, it is a must-watch for fans of the show.