Lost ran for six seasons and produced 121 groundbreaking episodes of television, but the series immediately found success as soon as its pilot episode aired. Lost was appointment television that set new standards for serialized storytelling and dramatic mysteries, and the show is still a major influence on the medium more than a decade later. Lost drew in viewers through its mysterious island, grander mythology, and non-linear storytelling that indulged in flashbacks, flashforwards, and even "flash-sideways." Lost generated suspense in many diverse ways, but character deaths were always major events that would change the series' status quo.
Source：https://www.cbr.com/lost-major-deaths/
