There may have been a point, in late 1988, where Tim Burton began to wonder whether he'd bitten off more than he could chew.
Sure, the 30-year-old director had made feature films before - namely Pee-Wee's Big Adventure and Beetlejuice - but those films were relatively low-budget. Small-scale. Made outside the glare of public and Hollywood studio scrutiny.
Batman, on the other hand, was being put together with a blinding media spotlight trained on it. Warner Bros had set aside somewhere around $30m to adapt DC Comics' beloved Caped Crusader for the silver screen, and both journalists and fans were following every step of its production with keen interest.
Most worryingly, as production on Batman got underway in October 1988, a vocal proportion of those fans were decidedly unhappy.