And then the first thing they'd want to do would be to destroy the evidence, wouldn't they?

If I destroy the evidence, no one has to know my father wrote something like this.

He might even send people in to destroy the evidence.

"What if that child is old enough to destroy the evidence?"

"You were moving too fast, and I had to destroy the evidence."

Someone had apparently set fire to the room during the night, perhaps to destroy evidence.

Maybe she took some photos of him and he wanted to destroy the evidence.

The fire may indeed have been intended to destroy evidence.

They had no choice but to walk right through the crime scene, destroying evidence in the process.

A fire was set in the home, apparently to destroy evidence of the crime.