"Syd!" Alison's echo wavered before me, her blue eyes only a mirage of their old vibrancy. "Oh my God, Syd! You can see me!"

I glanced at Gram, unable to speak, unable to move, my entire body frozen in grief.

This could not be happening.

Gram waved at the echo. "You must go back," she said. "We did not summon you, ghost."

Alison ignored her. "I don't know what happened," she said, speaking rapidly, shooting off her narrative like machine gun fire, "I was ...