WARNING: The following contains spoilers for The 100 Season 7, Episode 10, "A Little Sacrifice," which aired Wednesday on The CW.

The seventh and final season of The 100 is rising in intensity as the Disciples prepare for a climactic war, with just four episodes to go until the end of the series, and the titles of these episodes have now been announced.

The episode titles include Season 7, Episode 13 "Blood Giant"; Season 7, Episode 14 "A Sort of Homecoming"; Season 7, Episode 15 "The Dying of the Light" and Season 7, Episode 16 "The Last War", which is the series finale.

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The words "last war" were previously heard in the tenth episode of this season, titled "A Little Sacrifice". Bill Cadogan, leader of the Second Dawn doomsday cult, had recently returned from the past and revealed that he found logs from the Bardoan civilization and translated the characters. The prophetic story read, "The orb becomes like a star, challenging all we have done and all that we are. Only then will the last war begin."

Cadogan hoped that this meant the end of violence...but he might have misinterpreted it.

This season, Clarke Griffin and her team have been attempting to understand and use the Anomaly, a mysterious temporal portal that transports people to different worlds. At the same time, they must try to escape the Disciples, a military group devoted to Cadogan, and civil unrest has erupted in Sanctum. The murderous tyrant Sheidheda has taken control of Russel Prime’s body through his mind drive, and his power is only growing.

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Fittingly, the final episode will in fact be the series’ one hundredth episode milestone, meaning that the series The 100 will end on 100.

The 100 stars Eliza Taylor, Marie Avgeropoulos, Bob Morley, Lindsey Morgan, Richard Harmon, Tasya Teles, Shannon Kook and J.R. Bourne. The series airs on Wednesdays at 8 p.m. ET/PT on The CW.