He seems to have written his memoirs mainly so that he can 'dish the dirt' on all his former lovers.
The police 'struck pay dirt' when a witness came forward with new information.
The band 'hit pay dirt' [=had a big success] with their first single.
(..) here's the thing. See, your witnesses are your clients. So what? So... I know you have dirt on every single one of your clients. You blackmailed them for an alibi. He's lying. There's no way (..)2016 TvShow: Bones Title: The Fight in the Fixer Season: 11 Episode 15
(..) I thought, as a scientist, you would want to know the truth. Wow, are you guys finding as much dirt as I am here? Uh, yeah, great big heaping mounds of it. I am looking at a wiretap transcript of a Ukrainian ambassador (..)2016 TvShow: Bones Title: The Fight in the Fixer Season: 11 Episode 15