Last week’s episode was a strong and pivotal one, taking several formerly disparate story lines – the prison, the Governor’s compound, the nomadic Michonne, Daryl and his brother – and weaving them, like a DNA strand, into one. And it left us with Rick, coming off a mental crisis that was cleverly scripted, staring through the prison fence at a wounded, wordless Michonne. But when she does speak, it’ll lead to a collision of the two camps, and, perhaps, to the two b