They were pitted as the fiercest of rivals during their struggle for late-Nineties chart domination. But the Backstreet Boys and ‘NSync have officially buried the hatchet – and a couple of zombies – by teaming up to make a horror film with the movie studio behind the hit SyFy franchise Sharknado. Backstreet Boy Nick Carter will write and star in the post-apocalyptic drama, tentatively titled Dead 7, about a “ragtag band of gunslingers” fighting a zombie plague. He’ll be joined by a roll call of Nineties pop icons including fellow Backstreet singers Howie Dorough and A.J. McLean and ‘NSync’s Joey Fatone.