This is the Great Comic Book Detectives, where readers send in requests for the names of comic books that they remembered reading years ago and I try to find them for them! Send any future requests to brianc@cbr.com!

Today's request comes from reader Karl G., who writes:

I've been racking my brain trying to remember the name of a Green Lantern comic I read in high school. I don't think it's any earlier than the 90's. It starred Hal Jordan in a very surreal adventure; it had something of a Western aesthetic, with lots of strange-looking characters (even for a space-based book) and semi-psychedelic imagery. I don't remember the plot, but I remember that the book ends with the reveal that the whole adventure had been a 'journey to the center of the mind' type deal inside the Central Battery. I read it collected in a thinnish trade, but I don't know if it was a part of an ongoing title, a miniseries, prestige format, or what. I'd love to get my hands on a copy again, I remember really enjoying it! Thanks so much in advance.

The answer to this one is 2004's "Green Lantern: Willworld," by the late, great Seth Fisher and the always awesome J.M. DeMatteis. It was released as a graphic novel then, and then as a pair of DC's $8 reprint comics back in 2011, so either way they should be pretty easy to track down. I just saw a copy of the trade on eBay for nine bucks.

The book opens up with an intriguing beginning...

Soon Hal ends up in the Land of Odd, a strange city of extreme poverty right next to extreme wealth. He finds his way to a strange inn filled with strange people...

After a rest, he is consumed by questions - just check out how Fisher shows this...

As things began to become more clear, we get this brilliant sequence as Hal discovers that he is a Green Lantern (note that he does not yet know what a Green Lantern IS)...

Of course, we eventually find out that this world is created by Hal's mind, but, as Karl notes, it turns out that this is all sort of a test by the Green Lantern Corps.

I did not even share any of Fisher's double-page spreads! They're awesome! I love this comic. I've featured it here on the blog in the past.

Thanks for the suggestion, Karl! If anyone else wants the comic book detectives on the trail, drop me a line at brianc@cbr.com!