Adam Plantinga holds a B.A. in English with a second major in Criminology/Law Studies from Marquette University, where he graduated Phi Beta Kappa and magna cum laude in 1995. He has been a police officer for 17 years, and is currently a sergeant with the San Francisco Police Department. Plantinga’s first book, 400 Things Cops Know, received rave reviews from star crime writers such as Lee Child, Edward Conlon, and Joseph Wambaugh and was hailed as "the new bible for crime writers" in the Wall Street Journal. Plantinga lives in the Bay Area with his wife and daughters.