Frank Grasby’s father, the Reverend Cyril Grasby, is getting married at Rowntree Hall on Christmas Day 1954.

And to make matters worse – Frank is best man. The guests include important clergymen, and Inspector Arthur Juggers, Frank’s boss. As they gather at Rowntree Hall, the snow begins to fall, cutting them off from the outside world.

But shortly before the knot is tied, Dean Welling is found dead, poisoned by mistletoe. In his hand is a crumpled piece of paper – on which is written only the letter ‘G’. Juggers and Grasby investigate, but things quickly take an even darker turn: a scream rings out late on Christmas Eve, and the body of Reverend Danbury Hollis is discovered in the chapel.

Frank must save the day at his own father’s wedding, but how can he tell who is guilty when every suspect is a vicar? And where can he turn for help, when even the clergy can’t be trusted?

Co-authored by Ian Moore.