Welcome back, Whovians. Last week we visited Mercy, a town where we learned that making human-cyborg hybrids for wars is a bad idea and that apparently only mothers are sad, kind, and fierce all at the same time.

Welcome back, Whovians. Last week we visited Mercy, a town where we learned that making human-cyborg hybrids for wars is a bad idea and that apparently only mothers are sad, kind, and fierce all at the same time.