The 100 Season 4 Episode 5 Review: The Tinder Box. Skaikru loses its best hope for survival in another great episode of The 100. . Den of Geek The 100 Season 4 Episode 5: The Tinder Box Recap
: Individual episodes or the full season can be bought as digital downloads on Amazon Video and Fandango At Home. Key Plot Developments 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. The 100 Season 4 Episode 5 Review: The Tinder Box