In the 'Untouchable' episode, I thought maybe Mac was missing maybe a few hours, that is if the police weren't called because of his truck. I don't know how long it would take for the police to be called or drive down that road. In the episode where the baker owner got shot, Don was kinda out of touch with Mac and Mac wondered where he was most of the day since he was probably calling him. It'd be more interesting that maybe Adam or Lindsay calls her but she doesn't respond then they wait awhile then try again. I just think a full day would be more interesting.