This novel is considered one of L.M. Montgomery's few adult works of fiction, along with A Tangled Web, and is the only book she wrote that is entirely set outside of Prince Edward Island.

A twenty nine Valancy had never been in love, and it seemed romance had passed her by. Living with her overbearing mother and meddlesome aunt, she found her only consolations in the "forbidden" books of John Foster and her daydreams of the Blue Castle. Then a letter arrived from Dr. Tent and Valancy decided to throw caution to the winds. For the first time in her life Valancy did and said exactly what she wanted. Soon she discovered a surprising new world, full of love and adventures far beyond her most secret dreams.