Why Murphy won't die
The show keeps growing in factions and players. We now have the new Operation Bitemark team, Zona, the Asian coalition all involved in seeking a cure. Redhands trying to survive. After biting 10K, Bitemark will not forgive Murphy because everyone knows 10K's opinion on zombie hybrids. So Murphy and his followers are another threat now. Once 10K finds Bitemark and they learn Lucy is alive that will be the new quest. Zona and The Man will probably hear rumors about Lucy. Everyone will be racing to find her.
"You get a wonderful view from the point of no return." M. von Lipwig
Terry Pratchett (1948–2015)