M & C Lock & Key has been the number one locksmith in Crystal Lake, Illinois since 1964. Anytime you are in need of a locksmith, you can count on us to be fast and reliable. We have been providing our services for many years at highly competitive rates. Not only are we affordable but we are professional, friendly, and quick to respond to your call. So if you are in need of a locksmith around Crystal Lake, look no further than Northern Key & Lock Inc.