The Best Episodes Written By Elizabeth Sarnoff

What appear to be mercy killings are turning up one after the other in Boston. Both Dr. Macy and Jordan are both tracking a doctor with a deadly needle. Bug and Nigel audition for a network.

Jordan is called to a local psychiatric hospital to investigate a suicide. While there and unknown source provides her with a clue to her mother’s murder.

When the lover of a controversial lesbian talk show host is found dead, Jordan and Woody lead the investigation. Garret and Lily go head to head when a cancer patient dies.

A local woman dies and forces Jordan to come face to face with an ex-lover. Dr. Macy and D.A. Walcott make a trip to investigate if an execution was cruel and unusual.

Sawyer perpetuates a lie with some of the other island survivors in order to protect themselves from mistakes of the past.

Ben unwillingly divulges information to Locke about the island, taking him on a journey to various locations including strange monuments and the mysterious Jacob. Back at the beach, Juliet's secret is revealed. Flashbacks will show us the origins of DHARMA and the history of the island, including 'the purge.'

After the remaining survivors are reunited, Sawyer and Jack hatch a plan to divert the Man in Black's attention and leave the island without him on Widmore's submarine, but disastrous consequences await them. In the flash sideways, Jack investigates the cause of Locke's paralysis and offers treatment.

To atone for sins of the past, Ben must attempt to summon the smoke monster in order to be judged.

A deadly shootout threatens Barry's timely participation in Sally's big stage moment.

After finding an exhausted Michael in the forest, Jack and Kate bring him back to the main camp. When he finally wakes up, Michael has some new details about "The Others." Also, a lovestruck Hurley plans a date for Libby.

The day of the kurultai arrives, shaping Kublai's fate as khan. Ahmed makes his final stand, and Marco learns a terrible truth.

Jack and Kate find themselves at odds over the direction to take to save their fellow island survivors, Locke further solidifies his stance as leader of "The Others," and Sawyer and Juliet come under scrutiny from the Dharma Initiative.

Ben finally takes his revenge on Widmore after accepting the Man in Black's request for assistance. Jacob explains the purpose of the candidates, and Jack volunteers to take his place. The search for Desmond reveals that he has been rescued and the Man in Black plans to use him to destroy the island. In the flash sideways, each person ends up on their way to a concert.

Barry prepares for his first audition under Gene's guidance. Sally takes a stand in a meeting with a major TV producer. Noho Hank bares all.

I was talking about office supplies!

Alma asks Hickok to investigate the tragic fallout of her husband's gold claim purchase. McCall plots revenge after being humiliated at poker. Charlie Utter departs camp for Cheyenne. Doc Cochran makes a house call to the Bella Union.

Wolcott draws Utter's ire during the questioning of a suspect. Merrick is overzealous in re-establishing his newspaper. Fields and Hostetler have little luck with a wild horse. Swearengen alters his agreement with Miss Isringhausen.

Desmond looks for a woman who might be the key to helping Faraday stop the island's unpredictable movements through time; Locke finds out who has been attacking the survivors.

On the island, the Man in Black attempts to recruit Sawyer in his attempt to leave the island, while an impromptu funeral is held for the real Locke. In the flash sideways, Locke is fired from his job and becomes a substitute teacher.

Jack, Locke and Sawyer follow after a determined Michael after he heads into the jungle toward the dreaded "Others" in search of Walt. Meanwhile, Sun has a surprising reaction to Jin's desire to join the search party, and Hurley and Charlie commiserate over the age-old conundrum of "what women want."

Marco's allegiance to Kublai is tested like never before. Mei Lin's bold move throws Ahmed's plans into chaos.

Haunted by recent events, Kublai journeys with Marco into the mountains for answers. Empress Chabi takes action to insure an heir to the khan.

Let's split up.

Locke finds out where Jacob's cabin is. Life on the freighter becomes dangerous.

The Man in Black sends Sawyer on a reconnaissance mission to Hydra Island, where he discovers that Charles Widmore has returned to the island with a team of scientists. In the flash sideways, Sawyer is a lonely cop who is still searching for the original Sawyer.