List the characters and describe them. Characters were all addicts. They started with pot and or alcohol. Then hit the hard stuff. They lie, steal and cheat. Drugs are all they care about.
If your book was a mystery, tell what the mystery was and how it was solved. The mystery was “Why anyone is stupid enough to try or deal drugs” sadly that was not answered and probably never will be answered.
Where did the story take place? The interviews were from all over the US.
Disclosure: I received a review copy of this book from the author.