No Sh**. I was watching Forensic Files last night and the detective was telling how a rapist made his women take showers after their rapes which reduced the liklihood that evidence could be recovered and less likely that the women would report the crime. I wanted to scream at the TV STFU!!! You are just making for smarter criminals!
I agree with your anger that TV shows are making smarter criminals, however, the knowledge that taking a shower reduces evidence of rape has been out there for years. Its in the romance novels on sale at the supermarket. Granted, your average rapist is not reading romance novels, however if the knowledge has permeated that far its unlikely that a rapist is hearing about it for the first time on Forensic Files.
Yes, and how long ago did that rape happen? I'm betting quite awhile ago--most of those FF cases are a decade or so old. (Sometimes older.) It isn't the teevee that's educating them, it's just paying attention to the trials, where all the evidence (and how it's gathered) comes out.