https://viewcomiconline.com/detective-comics-1937-issue-395/"Secret of the the Waiting Graves"
the first story by O'Neil, and Adams / Giordano
Another example of pure perfection in a Batman story. I'm just awed by the created mystery in this story, the balance of modern elements, combined with a more timeless gothic feel and the supernatural, and just the sheer poetry of it, right up through the last panel.
Everyone involved in creating it, and buying and reading it, had to know they were a part of comics history, something enduring and changed forever by this story. And here we are over 50 years later, and the legacy of it still shapes the character. That's one heck of a legacy for Schwartz, O'Neil, Adams, and Giordano.