My friend, who previously worked as an investigator, told me the following story.

A girl comes to the police and writes a statement about rape.  They raped two, one held, the other raped, then changed. Investigators with no hope:

Have you remembered the signs?

What signs?

- Well, what special, spots there, scars, whiskers...

No, I did not remember. Here is.

He takes a passport from his bag.

While they were kidding, I pulled one of my jackets out of my pocket.