CBS' Armen Keteyian has done some digging around the Nashville police's investigation of apparent murder/suicide involving former Titans' quarterback Steve McNair and his girlfriend Sahel Kazemi.
Friends and family of Kazemi say that the scenario the police described is nearly impossible and the work of independent investigators have found troubling discrepancy in the timeline of the Nashville police's investigation.
What once seemed like a tragic open-and-shut case may be anything but.