A Higher Loyalty: Truth, Lies, and Leadership

It's not really about Trump

It is a memoir about Comey's life, education, and events that shaped him. It condenses his lifetime of thoughtful analysis of what means and takes to be an ethical leader.
Trump is the last and most egregious of several counterexamples who demonstrate how not to be an ethical leader. Others included Rudy Giuliani, Dick Cheney, George W. Bush, Andrew Card, Karl Rove, and the Clintons.