Watch The | 100 S04e05

: Abby begins experiencing similar hallucinations and physical symptoms to Raven, realizing she also has brain damage from the EMP.

: Available on Amazon Prime Video and HBO Max (regional availability may vary). Watch The 100 S04E05

: Raven discovers that the nightblood solution must be created in a zero-gravity environment. While her brain has been "upgraded" with remnants of ALIE's code, she is warned that this heightened state is causing a stroke. Watch The 100 S04E05