TV Cop Shows

I’m getting a little sick of this. Every time I watch a TV show like Law and Order or CSI, I always figure out who the killer is way in advance. Not but my massive powers of deduction, but because I recognize a guest actor. As soon as I recognise a face, I know they’re the killer. So annoying and predictable. They need to try harder. Anyone else notice this? It’s so obvious, I can’t be the only one. Jeez.