One of the things I like about The 100 is they keep the pace moving. Unlike some shows that plod along there is always something happening here. The Tinder Box is aptly titled since by the end we have an explosion, triggered by Ilian, destroying Arkadia- and with it, hopes for riding out the radiation if the Nightblood cure falls through. I was just thinking how Ilian has been mostly a non- factor in the show so far- well he solved that. Bringing a wounded Octavia back to Arkadia as an excuse to infiltrate, he manages to blow the place up just as Clarke and Roan have worked out yet another deal.
Speaking of Clarke and Roan, they play off each other well, but I'm wondering how many times this show can go to the well. Conflict is imminent but then the two of them hash something out. This time it's almost war between Grounders and Skaikru, and again it's Clarke and Roan- in really cool cave- hammering out an agreement. Since they sealed their pact with blood, wil Roan actually keep it this time? The good news though is that Octavia is alive, although I'll never understand how- she's been stabbed, fallen off a cliff a gazillion feet up, and is now being knocked around by explosions. But hey, she's tough.
Meanwhile Abby and Raven (with an assist from Jackson) are working on Nightblood, and Raven is... floating? Whassup? All those theories that Becca or ALIE were somehow in Raven... well that turned out to be true. Apparently part of the ALIE code (and some of Becca's knowledge) are indeed in Raven's head- but she also apparently has brain damage from the EMP that fried the chip. Bellamy meanwhile saves the day by talking Riley down- yes Riley the plot device that drives the suspense here- will he kill the king? A strong moment for Bellamy, who tells Riley that war made him a murderer. He's turning the corner on forgiving himself perhaps by imploring Riley not to do the same thing.
So Arkadia is gone and Abby/ Raven may have a breakthrough- although I think the rocket thing is a bit- I don't know, silly? Looks like they're going to need the Nightblood cure. Unless they can find another shelter.
Niylah is here. Yay! Need more of her- nice to see her and Clarke hug.
Some Harper in this one. And she had the best line when she asked Monty "You're citing Pike?"