When Sister Evangeline of the St Rose Convent stumbles across a mysterious correspondence with Abigail Rockefeller in the archive, it reveals that angels once walked among us … and might still. This discovery plunges Evangeline into the hidden and dangerous world of the Angelologists – a secret society that battles to prevent the ascendancy of the Nephilim, the angels’ descendants on Earth. Evangeline becomes the catalyst in a race to hunt down powerful and ancient artefacts that can be used to enslave humankind. And not only is the key to finding those artefacts within her grasp – but also a secret about her own past and its links to the Angelologists. Possession of either could cost Evangeline her life . . .