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‘The 100’ Sneak Peek Teases Blake Sibling Bonding and a Surprise Visitor (Exclusive Video)

Bellamy and Octavia get deep, before yet another emergency demands their attention

The Blake siblings get in a little bonding time before yet another emergency demands their attention, on an all new episode of “The 100,” airing on The CW Thursday.

In this exclusive video (above), Bellamy (Bob Morley) and Octavia (Marie Avgeropoulos) don’t see eye-to-eye on Arkadia’s decision to open Mount Weather back up after irradiating its population in the Season 2 finale.

However, the Blakes always fit in with each other and after a touching moment, their attention is called away as guards drag in Echo (Tasya Teles), the grounder who was in the cage next to Bellamy’s last season.

She has a message for them: the summit at Polis is a trap, and an assassin has been dispatched to kill the envoy from Arkadia before sundown.

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