How to use "footprints" in a sentence

They followed their own footprints out of the cemetery, to the quiet residential street where the rented Chevrolet was parked in the wan light of the street lamp.

I want to see if there are footprints.' He moved towards the open window.

'I've always wanted to be right in the middle of a murder,' he said, and went out into the garden to look for footprints