Knowles stopped by WCL to give a sneak peek of his investigation.
I-TEAM: DANGEROUS GAS LEAKS
The I-Team uncovered records showing thousands of gas leaks in and around the Chicago area. Is enough being done to protect your family?
Knowles' I-Team investigation will air 10 p.m. Thursday.
Check out the I-Team on ABC7, visit: http://abc7chicago.com/i-team/