I've been trying to find the name of a Batman story where Bruce Wayne is an inmate locked in Arkham Asylum. Batman is not real just something he has imagined in his own mind, and all of the villains he comes against does not exist, ie. Joker, Riddler, Penguin,. etc. Everytime I try to search the web I find nothing but Arkham Asylum video game info. I know it's not "Dreaming in Darkness" where Bruce has himself comitted to find how the villains always end up escaping. This story deals strictly with Bruce as the inmate and his mental frailty creates his world in his head. It's probably around late 70's early 80's it was out. I believe it was a one shot book, maybe a limited series.