Forty minutes into it, Dewey, Gale, and Chief Hartley are talking about the possibility that they may have a copycat killer on their hands.

Gale has written on a chalk board behind her the first three victims. She underlines the names.

Watch closely as she does it.

When she underlines STEVENS, the chalk runs from the first S to the last S. About 2 frames later we're back at the chalk board and the underline has been cut back to the N. A few frames later the underlined word now reaches just past the

last E.

You wouldn't really notice it unless your eyes were wondering.