That's what happened in the "Forensic Files" episode - the original agent brought her husband along. The perp walked towards the car, spotted the man, and high-tailed it. He cruised around until he saw an "Open House" sign, walked in and ended up killing the woman on duty.
Sounds like a show that gives robbers and murderers ideas. I guess every does that. I’m sure it also helped to wake up some Realtors and to keep them more alert to the possiblities.