As Rudy Giuliani searched for damaging information on the Bidens in Ukraine, waged shadow diplomatic campaigns in Venezuela and Turkey, and spoke regularly to President Donald Trump about all of it, a 19-year-old law student was quietly watching and soaking it all in.

The saga of Lev Parnas, a close former Giuliani associate and fixer, is familiar by now: Parnas helped Giuliani investigate Joe Biden and his son Hunter’s dealings in Ukraine, an endeavor that ultimately led to the president’s impeachment.

Unknown until this week, however, was that Parnas’ son Aaron was present for much of it. And he has now written an eyewitness account of many of the back-channel dealings conducted by Giuliani and a small group of his confidants to help their clients — chief among them the president of the United States.

“I had no intention of writing this book before a few weeks ago,” the younger Parnas, who recently graduated from George Washington University Law School in D.C., said in an interview. “But after I finished the bar exam, I began thinking about how young Republicans and young people in general often feel like they don't have a place in the political system and might not want to vote. So I thought if they were able to see what I saw — maybe it would help them make a decision.”