Episode 21: The Four seize upon the clues they found last week and re-double their efforts to find the person responsible for cracking the wall to the Inner Enclave. Along the way, they get an update on the situation elsewhere in the country, learn a bit more about Grinylla, and discover that they have another tenant in their new house. And just before the end of the episode, with a little help from Athgarr, they finally encounter the wall-cracker and prepare to try to take him down!