Time Out says
One room, one hour, one chance to escape. This interactive escape room attraction features rooms based on real Chicago events, like the U.S.'s first known serial killer H.H. Holmes and his murder hotel during the 1893 World's Fair, or the the infamous St. Valentine's Day Massacre linked to gangster Al Capone. Gather a group and find out if you have the smarts—and the nerves—to escape the room within the hour solving clues and riddles to find the key. Check their site for updated availability.