Charlie Barnett is an American actor. He initially began acting in the mid-2000s, debuting in the film Circus Island. He pursued acting full-time recently in the 2010s. He first guest-starred in Law & Order: Special Victims Unit, as well as in Law & Order: Criminal Intent. That same time, he appeared in the film Private Romeo. From 2012 to 2015, he gained recognition for his role as Peter Mills in Chicago Fire. He next starred as Patrick Warner in Secrets and Lies. From 2017 to 2018, he starred as Ian Porter in the short-lived series Valor. This year, he played Ben Marshall in Tales of the City and Alan Zaveri in Russian Doll.