I recently watched the movie The Gray Man, which centers around the early-20th Century killer Albert Fish. It wasn't an awful movie, but only those with prior knowledge of the case will really enjoy it, as it puts in many details out of context.

I first learned about Fish through Harold Schechter's book Deranged. Schechter wrote to Robert Bloch (author of Psycho) when Schechter was doing a book on Ed Gein, since Bloch's book was based in part on Gein. Schechter states that he asked Bloch why Gein was still so fascinating and creepy to people. Bloch replied, "Because nobody remembers Albert Fish."

That led Schechter to research and publish Deranged, and it, like most of Schechter's work, is required reading for true-crime buffs.

Click on the link above to read more about Fish, but there is much, much more to Fish and his proclivities than is mentioned on most sites, and I highly recommend Schechter's book for those truly interested in a fascinating character.