Most predators are easy to capture, because their sick desires cloud their judgement, thus making them pretty inept criminals. Unfortunately, our problem isn't in catching predators, it's in keeping them locked up.
Exactly. There's an attorney here, or used to be before Katrina, whose sole practice is going through death penalty cases and getting the perps off on obscure technicalities. His name is Clive Stafford Smith, a British anti death penalty advocate.
There was one case here in particular where the perp hid the body of a 6 year old in his closet over the weekend. He was questioned by the police several times. He got a retrial and instead of frying he's got I think 25 years. I will have to look it up.