Langan's novels draw on his experience as a former litigator in Syracuse and Washington D.C. He currently works in Syracuse as a career law clerk in federal court.
"I know legal situations, law settings that can lend themselves to a mystery," Langan said. "You have to create this world that moves people around and at least I know this."
He did try his hand at writing a romance once but is unlikely to do it again.
"It was the worst romance," Langan said. "It had no steamy stuff in it, which is why, you know, it stunk."
Since Langan first published his work, he's toured local bookstores and libraries including the Fayetteville Free and DeWitt Community libraries. His audiences range from as few as two or three listeners to 30 or 40. His advice to budding writers is to set realistic goals, lower expectations and make time to write a little bit every day.
"Don't think you're going to hit a home run, and within one year write a novel, finish that last sentence and smoke a cigarette," he said. "And then think you're gonna make $100,000."
Langan's first two books, which he wrote simultaneously, took about five years to complete, with a host of revisions made along the way.
"I think writing is rewriting," Langan said. "'Dark Horse' took literally five years from when I first started doing an outline to when I held it in my hands. You gotta be patient."
His other piece of advice? Sacrifice.
"I like to play golf which is an absolute killer because it's five hours," Langan said. "Stringing together five hours to write is like gold. You can blow that out in a golf course. You gotta sacrifice. I sacrificed golf which is comical -- because I stink at golf."
Where to buy Langan's books