. >>> at the latest gym where david pietz worked, co-workers like troy wagman understand full well why david looked so rough. still, it was a hard thing to witness. >> he looked very bad. he looked like he hadn't slept, lost weight, dark circles under his eyes and he seemed a little bit more sad. >> while david pietz slowly got back to work after taking time off to mourn his lost wife, detectives intent on solving her murder began interviewing people from the gym world who knew the couple. starting at the facility where nici and dave had first met. >> bally's was the type of place were most of the rumors weren't really rumors. they were true. >> staff members agreed that dave, the alpha dog of the sales department, and nici, the nice girl, were a hopeless mismatch. >> the more nici liked him, the more i knew she shouldn't. >> what dave saw in nici, according to some co-workers, was a cynical way to climb the corporate ladder. nici was everyone's favorite, and their boss in particular loved her like family, as c.j. brady saw it. >> nici and our supervisor were very close. almost like a