“...Guiliani took on the mafia....”
I was hoping for Guiliani https://en.wikipedia.org/wiki/Pizza_Connection_Trial
At the time I worked for an attorney representing one of the defendants. https://www.amazon.com/Pizza-Connection-Lawyers-Money-Drugs/dp/0788168363defendants. There is also this book by Shana Alexander.
I really am a Guiliani fan as well but apparently he has an alcohol problem & his health is not good enough to take the abuse. President Trump made a difficult decision to use him in specific areas as issues arise rather than fulltime.