1. Investigations Northern Illinois
830 Alleghany Rd, Grayslake, IL 60030
Coordinate: 42.3547,-88.0514
Phone: (847) 548-4906
2. Falcon Investigators Inc
1706 Chelsea Way, Grayslake, IL 60030
Coordinate: 42.31206,-88.06035
Phone: (847) 543-5470