When nineteen-year-old runaway Verity Darkwood, flat broke and devastated by guilt, takes refuge in a bar to escape the unwanted attention of a stranger, she doesn't expect to meet Gareth Winter, let alone become business partners with him. They discover that they each possess the ability to interact with the world beyond the veil and, with the help of Horace Greeley III, editor of the fantastical online journal The Echo, Verity and Gareth spend the next two years on the road, helping the earthbound spirits who haunt their clients to cross over, or exorcising the demons that plague them. But when they stumble upon a series of unsolved child abductions spanning decades which are eerily similar to the circumstances surrounding the disappearance of Verity's younger sister, they embark on a pursuit that will take them across Canada in their quest to find The Seventh Devil, the dangerous and mysterious figure who may be behind it all.