“With a great show of effort, Crenshaw sat up. He stretched, easing his back into an upside-down U. “I don’t think you understand what’s going on here, Jackson,” he said. “Imaginary friends don’t come of their own volition. We are invited. We stay as long as we’re needed. And then, and only then, do we leave.” “Well, I sure didn’t invite you.” Crenshaw sent me a doubtful look. His long, whiskery brows moved like strings on a marionette.”