Summer Crossing by Truman Capote.

He wrote the whole novel, but then claimed to have destroyed it. It turns out that a houseguest had retrieved it from the trash and held on to the manuscript for about 50 years. It was then published in 2004.

Capote also was supposed to write a follow-up to In Cold Blood about the Houston Mass Murders in 1973 but was too sick to travel to begin researching. The sketches of what he planned to write are kept as “the Houston Diary 1973-1974”.

As a true crime fan, I cannot begin to imagine what Capote would have had to say about serial killer Dean Corll and his two accomplices. Definitely would have been one for the ages.