A glamorous French weddingIt's set to be one of the society weddings of the year, but thriller-fan Hetty Jones is feeling out of her depth. She's already picking up on family tension between her boyfriend Davey and his twin sisters Ailsa and Juliette, which can't just be put down to pre-wedding nerves.

Hetty feels out of place in this company; Davey's family are rich and well-educated, while she grew up on a council estate. Davey's cousin Isabelle is to marry Jean-Jacques, a French right-wing politician, in the family chateau.

A fairy tale eventAilsa is hesitant about coming back to France. Eight years ago, something happened that nearly destroyed the family.

But that was dealt with, wasn't it? Hetty has secrets of her own that she doesn't want known. Ailsa is drawn back into the past.

What, exactly, did happen? The expensive wedding is everything it should be, until the groom is taken ill. The revellers carry on, but something is seriously wrong.

Then things start to unravelRelationships begin to fracture and secrets from the past surface - with murderous results. .

. Who is telling the truth? Who is out for revenge?.