photographer joe szymanski. e's gone missing, but cops are hot on the trail of a suspect, following clues that take them from joe's driveway to hundreds of miles away. >> there was blood on the driveway, a homicide expert determined that it was probably foul play. >> reality would soon set in. >> it is terrible because he was my brother and he's gone. he's gone. >> there's a saying that good photographers treat life like a camera. they focus on what's important. and joe's family says his children were his focus. >> i knew that something must be wrong because joe would not have missed that. >> mary szymanski was looking for any logical explanation about why her brother wasn't home when his ex-wife came to drop off the kids. >> joe told me there had been a poisonous snake in his garage, and i honestly created a story in my head that maybe the poisonous snake had somehow bit him. >> but when police noticed blood in the driveway, they immediately suspect foul play launching an investigation to find a killer. >> we ar