Altimio Sanchez's DNA Was Found in a Restaurant on a Saturday Night

There were 84 names on the list. And one of them was Altimio Sanchez. He had been arrested twice in Buffalo for soliciting prostitutes, but that was years and years ago. Detectives decided not to interview Sanchez unless they could find hard evidence to connect him to the crimes. It was a Saturday night when they got their chance. They asked waiters at the restaurant not to touch the couple's glasses when they left. But would the glass or napkin yield enough DNA for some kind of identification?