D&Diesel

is the third special episode of Critical Role. It was created as a marketing promotion for Vin Diesel's upcoming movie, The Last Witch Hunter.

Synopsis
A party of adventurers, led by Kaulder the Witch Hunter and including Critical Role's own Grog and Vex'ahlia, agree to help a small village called Braunbog rid themselves of a terrible curse. They find a young woman living between the town and the nearby swamp, and she agrees to bring them to where she believes the curse originates.

As the group travels into the swamp, night falls and the party is surrounded by mist and attacked by wraithlike creatures. Vex is surprised but Kaulder kills the wraith that would have attacked her. A second goes for Kaulder but is killed by the Headmistress and Grog working together. Vex and Dupont dispatch a third wraith before it can attack it's target, Grog. After that, Kaulder wipes out the rest of the wraiths with a mystic blast.

The mist clears and the party finds a stone platform with a table on it - seemingly a sacrificial altar of some kind. The darkness is oppressive, even after Dupont lights a torch.