Are you stupid? You're just gonna go for the first person there's any evidence for?

We look at the knife injury. See if it's someone who knows what they're doing or not. The knife wasn't cleaned and was put back messily, so probably not someone who's used to killing. Then we look at motive - whether they wanted it for themself, or just wanted to make sure the shooter didn't get it, or just wanted to put her out of her misery - we talk about it instead of just going for the first person who comes up!

I don't wanna get it wrong ever again!