Using the Book of Strangeways, BJ can travel at will in and out of Crossroads. But unfortunately, so can others - including those who threaten to tear this magical place apart. BJ has brought the enlightenment of science to her adopted world, teaching her patients new ways to survive and prosper.

But now, as the creatures of Crossroads battle among themselves, and a sinister outsider brings mistrust and mayhem, she wonders if that wisdom will be enough to defeat the powers of ill will - and brute force.