[His lips part slowly after her first sentence is out, but it just keeps coming. Fact after unbelievable fact, and he starts to shake his head half way through, one hand coming up to stop her. She keeps talking, and he's having a hard time processing it all, until finally he bites out a:]

Wait, wait- stop, no- hold on, slow down-

[The grounder attack was- it can't have been months, and Mount Weather was- ship?

He paces away from her for a second tugging at his hair before whirling around again.]

Clarke, the last time I saw you was yesterday, you killed Finn, remember? Only now it turns out he's alive? That drop ship- Clarke, that's ancient history, there's no way you've forgotten everything since then.

[He's going to have to take this one step at a time, because otherwise he's going to shoot something.]