Don't be afraid of using your personal experiences when you talk to a source. That helps to engage the person you're interviewing. He added that he also tries to get into the heads of his sources. When he was talking to Grehl, the pharmacist kept sharing his fears about retribution, to the point where even Henderson was worried. Know what your subject thinks, wants to destroy, wants more of.
Editors are important.
Henderson said it's like a game with him to know every single fact. Grehl had mentioned he had had an omelet the day of the shooting. Readers want those details. Place is also important. Henderson went to the cemetery in Chicago where Tony Williams was buried.