After months of combing through the Steve McNair case, our reporter sits down with two Nashville PD detectives who defend their investigation. But in doing so, they reveal a startling new detail about Jenni Kazemi that could change the entire complexion of the case … if it's even true.

Steve McNair's will goes unsigned. His estranged widow, Mechelle, takes control of his estate. The cops don't interview her. Why? Listen to Fall of a Titan on Apple Podcasts or wherever else you get your podcasts.

In the aftermath of what police rule a murder-suicide, two family members on opposite sides of the tragedy take a serious and active interest in the case: Steve McNair's mother, Lucille, and Jenni Kazemi's older sister.

On the afternoon of July 4, 2009, one of Steve McNair's friends, Wayne Neeley, drops by McNair's downtown condo only to realize he's stumbled upon a crime scene. Neeley calls McNair's bodyguard, Robert Gaddy. It took 44 minutes to call 9-1-1.