As the joint Grounder and Sky People army prepares to storm Mount Weather, survival instincts lead to a betrayal that leaves Clarke and her people isolated. The Battle Plan
This guide covers the high-stakes penultimate episode of Season 2, "Blood Must Have Blood Pt. 1." Episode Overview Original Air Date: March 4, 2015 [S2E15] Blood Must Have Blood Pt. 1
Bellamy works covertly to release Grounder prisoners to fight from within. Key Plot Points As the joint Grounder and Sky People army
Just as the army pulls open the front door, Lexa reveals she made a secret deal with Mount Weather. In exchange for the release of her people, she commands the Grounder army to retreat, abandoning Clarke and the Sky People. Key Plot Points Just as the army pulls
Octavia and Indra lead a force through the tunnels.
Raven and Wick must blow the turbines to cut power.
Inside Mount Weather, Bellamy frees the Grounder prisoners, including Echo, to create an internal uprising.