What if- an idea of Batman light to dark
Has there even been a story that explained how Batman went from campy to dark? I wouldn't mind some story in an annual or something where some villain or event turned Batman from camp to dark to the point that the first page of has him calling Robin 'old chum' as they stop some 60s badguy from hitting people with hardboiled eggs or whatever, to ending the final pages with a brooding Batman going after cold blooded murderers.
Like maybe a story where the bad guys stopped being colorful and use crazy schemes and props to actual murder with normal guns and knives. Where he realized if the bad guys were gonna stop clowning around, so should he.