Two Girls, a Clock, and a Crooked House — Michael Poore

Combine the thought-provoking time travel of When You Reach Me with the humorous storytelling of Lemony Snicket, and you get a wholly original journey through time, space, and the depths of the human heart.

This is a story of things that are not possible.

It's not possible for Amy to see spirits. (She does.)
It's not possible that Amy and Moo can communicate using only their minds. (They do.)
It's not possible to time-travel. (Yet.)
And it's definitely not possible that witches exist. (Seriously?)

None of these things are possible. (Until now . . .)