Originally Posted by demonrail666
How important are the Detective stories to the whole Gotham universe?
Detective Comics overlaps with and bounces ideas back and forth with the main Batman all the time, so... potentially just as important.
Batman's first appearance was in Detective Comics (though with specific regard to your question, Gotham wasn't a thing then... it was just New York), and some of the classic stories have run in Detective Conics or through Detective Comics and Batman and other Bat-titles.
It's as important as Action Comics is to Superman.