DANIEL ROEBUCK (Dr. Leslie Arzt)
WHEN HE DIED Season 1, episode 24
HOW HE DIED Exploded outside the Black Rock while handling dynamite and explaining the temperamental nature of nitroglycerin.
To read what Daniel has to say about his death, pick up our collector’s edition Lost issue
ELIZABETH MITCHELL (Dr. Juliet Burke)
WHEN SHE DIED Season 6, episode 1
HOW SHE DIED From injuries after falling into the Swan station’s pit and detonating the Jughead hydrogen bomb.
To read what Elizabeth has to say about her death, pick up our collector’s edition Lost issue
Visit EW.com on Friday for a gallery of all of Lost‘s major deaths