Mentmore Towers, a grand Victorian estate in Buckinghamshire that lent its stone grandeur to Christopher Nolan's 'Batman Begins,' now faces a quieter and more stubborn darkness than any fictional villain could conjure. English heritage officials watch with growing concern as the mansion deteriorates, its upkeep outpacing available resources, while a protected colony of real bats has taken residence within its walls. The building's cinematic fame has made it visible to the world but has done little to secure its survival, leaving it caught between the weight of history and the competing demands