When someone murders a Tennessee State Trooper in the middle of a highway, investigators turn to his dashcam for answers. A manhunt quickly gets underway, but it takes even more surveillance video to pick up a killer's trail and crack the case.

Michelle Mockbee goes to work early to get a jumpstart on payroll. Less than an hour later, she's murdered outside her office. Following the surveillance footage leads detectives to a closet full of dirty secrets that may have been worth killing over.