Well that Submarine guy was really stupid. She was just a killer.

But the whole Silence of the Lambs/Criminal Minds this is a big stupidity.

I think only 1% of the Seriall Killer like that. Playing with the police, sending messages etc.

Most of the Serial Killer's just want ot fulfill his desires and don't get caught. A real SK is trying to hide/dipose the body no to expose it.

And trying to lure the victim in his house/place and kill it without trace.