Season 9 of The Walking Dead was supposed to be a return to form after a somewhat muted reaction to season 8. It seems that this isn’t entirely going to plan, however. Last Sunday's episode, "Stradivarius," scored a lowly 4.79 million viewers, giving it a 1.8 rating in the key 18 to 49 demographic, which makes it the least watched live episode in the show's long history. Now that Andrew Lincoln's Rick Grimes is gone, are viewers going to stick around for the long haul?