Their faces were so alike that I knew they were twins before either of them spoke.

They were no older than three.

One wore a yellow T-shirt with a faded butterfly.

The other wore pink and had mismatched socks.

There was dirt on their knees.

The girl in pink had her mouth pressed shut, but her lower lip trembled anyway.

I looked up the street, expecting an adult to come running and turn the discovery into a foolish game.

No one came.