A door in time. A visitor from the future. A girl determined to save the boy she loves.

Clara Barculo makes an uncanny pact with the peculiar Mr. Lestrange, as a grief-stricken Mathew Erlang makes his way north to Elgol.

Violence and sickness have invaded England and Mathew’s journey is not an easy one. With a new friend, he finally makes it to his grandmother’s house, but all is not what it seems in the idyllic community of Elgol.

In the last part of the House Next Door trilogy, family secrets are revealed, as is the true nature of August Lestrange.