Get ready for The 100 to turn back the clock.

'The 100' Season 3 Spoilers: Are You Ready For A 'Field Of Blood'? 'Hakeldama' Summary Released

Flashbacks peppered the drama's first season, and while season 2 veered away from that particular form of narrative, episode 7 will bring the past back into focus. Titled "Thirteen," the March 3 hour will hopefully give fans a deeper understanding of what went down when ALIE triggered a nuclear holocaust.

"Lexa (guest star Alycia Debnam-Carey, "Fear the Walking Dead") tries to maintain peace and order within the clans, and Clarke (Eliza Taylor) uncovers a strange and game-changing truth," The CW teased. "Meanwhile, a flashback takes us into the darker chapter of humanity's past."

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Does "Thirteen" reference the Sky People's position within Lexa's coalition, or could it be a reference to the 13th station that perished as the Ark came together? Thirteen is a particularly unlucky number in the world of The 100, and we don't envy any group saddled with the burden of fitting into a structure that only seems built for an even dozen.

In the meantime, viewers can catch "Hakeldama" (Feb. 18) and "Bitter Harvest" (Feb. 25).

The 100 airs Thursdays at 9 p.m. ET on The CW.

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The 100, Television, The cw