The Walking Dead’ Season

Negan, the swaggering post-apocalyptic brain basher, has declared that there is going to be an all-out war on “The Walking Dead,” which returns for Season 8 on Sunday. Unlike in previous skirmishes with big bad villains and their minions (the Governor, the cannibals of Terminus), this time there are far many more factions to deal with, and more than enough shifting allegiances, devious double agents and bitter blood feuds. Season 7 tested everyone’s patience with its seemingly endless introductions to new communities, new characters and new philosophies, but if the show hopes to return to its strengths, a more relentless pace might be called for.