I thought this was a good episode. I'm wondering if I can do that tracing like she does. It must take a lot of experience, but, I'd like to give it a shot. 

So, in the original investigation, someone had reported seeing a dark blue pickup truck.  Turns out, that was not the case with the killer. He didn't drive one. You really have to be careful of eye witness testimony.  I'm so skeptical of it. 

The killer really showed his ignorance by leaving used condoms EVEN after DNA became widely used to convict offenders. Plus, he didn't know how to spell AND, instead using AN.  I'm amazed that he never told anyone like in bragging. 

Also, I would be inclined to think that he must have murdered and/or sexually abused other children over the years.  He was rather young at the time he murdered April Tinsley.  The girl didn't know him.  There was no reason he couldn't have let her go.  He is a very heartless sociopath for sure.