Following the ancient tradition, ordinands from the College  of the Transfiguration gather at first light on Ascension morning to sing their praises from the top of the college's  tallest tower. Not one to miss any liturgy, Felicity finds herself swept up in worship as she listens to the timeless words.

But her delight quickly turns to horror when a black-robed body hurtles over the precipice and lands at her feet. Her investigative instincts immediately kick in when she sees a double-headed snake emblem clutched in the lifeless hand. Was this suicide? Or murder?

This time, though, Felicity will leave the investigating to someone else.  She and her fiancé, Antony, are off to lead a youth pilgrimage through Wales.  Yet even in this remote, mystical land, lurking figures follow Felicity and Antony, and Felicity finds herself haunted by the writing snakes.  Then an ancient holy well reveals another body...

Ingeniously plotted by a master of contemporary suspense, An Unholy Communion weaves Great Britain's holy places and history with an intricate mystery that will keep readers guessing to the very end.