1896, Nuneaton.

Left on the doorstep of Treetops Children's Home, young Kitty captures the heart of her guardian, Sunday Branning, who has never been blessed with a child of her own. Kitty brings sunshine and joy wherever she goes, and grows into a beguiling and favoured young girl. But then Kitty is summoned to live in London with her birth mother.

At first London offers Kitty excitement and adventure. With her delicate beauty and the voice of an angel, she attracts a promising singing career and the attention of a number of dashing suitors.

But those now close to Kitty are not what they seem, and her comforting old home at Treetops starts to feel very far away. If Kitty is to have any change of happiness, this little angel must protect herself from devils in disguise . . . and before it's too late.