In the professor's desk, Ramsey found a roll of parchment and gave it to the raven. "Deliver this to Echo."

The raven circled the room once and landed at Echo's feet.

"Deliver that to Jon," she told it.

It did, and just to be on the safe side, Jon asked it to deliver it to Ramsey and then me. By the time it was done, it cocked its head and squawked as if to say, "Enough!" Then it flew toward the closed door and vanished through it.

"Guess ...