These are the 14 red flags to identify the scammer in your life before they con you—from a victim-turned-vigilante and host of the hit podcast Queen of the Con.

“Johnathan Walton has written a master class on how to spot scammers, con artists, grifters, and thieves. And his storytelling reads like a crime novel. . . . A must-read.”—Joe Navarro, FBI special agent (ret.) and author of the international bestseller Dangerous Personalities

“Some people play golf on the weekends,” Johnathan Walton says. “I hunt con artists.”