Ep 9. The Eternity Injection

In the season 3 episode 9 of Elementary titled "The Eternity Injection," Sherlock Holmes and Joan Watson take up the case of a man who has died from consuming a rare and dangerous drug. The drug is called "the eternity injection," and it is said to have the power to make the user immortal. As they begin to investigate, they find that the drug is linked to a group of rich and powerful individuals who have been using it to extend their lives.

As they continue to dig deeper, Holmes and Watson discover that the drug has been stolen from a pharmaceutical company and that their suspects are members of a secret society that believes in living forever. The society's leader, played by guest star John Noble, believes that the drug is the key to achieving immortality and is willing to do anything to keep it out of the hands of the authorities.

Holmes and Watson find themselves in a race against time as they try to stop the society from distributing the drug to the public. They must also deal with their personal issues as Watson deals with her family problems, while Holmes continues to struggle with his addiction and his relationship with his brother Mycroft.

The episode is full of action and suspense as Holmes and Watson race against the clock to stop the society from achieving their goal of living forever. Along the way, they also discover some surprising truths about themselves and their relationship.

Overall, the episode is a thrilling addition to the series and is sure to keep fans of the show on the edge of their seats. With great performances from the main cast and a compelling storyline, "The Eternity Injection" is a must-watch for fans of the series and anyone who loves a good mystery.