I read "The Last Testament of Lucky Luciano," and thought it was very good. I wonder if it would be redundant to read "The Real and Fake Gangster."
No, it wouldn't.
"The Real and the Fake Gangster" was an excellent book. "Last Testament" was a fairy tale, albeit an enjoyable read.
"The Real and the Fake Gangster" actually points out many of the blatant errors in "Last Testament." You should read it for that reason alone.
