Read these lines from "The Moon."

The moon has a face like the clock in the hall;
She shines on thieves on the garden wall,
On streets and fields and harbour quays,
And birdies asleep in the forks of the trees.

Why does the author mention "thieves" in the second line?

to show that the moon can spook people
to show that the moon is smart and tricky
to show that the moon helps catch criminals
to show that nothing can hide from the moon’s light