There's no good time to discover a dead body. But in the middle of your wedding day has to be the worst time ever.

For Jenny Hislop, her wedding in her coastal hometown in Ireland is meant to be the happiest day of her life. Despite the painful memories the town holds of the parents she's lost, Jenny's blissfully happy as she makes her way from the ceremony to the lighthouse for the reception.

Then she finds a dead body on the cliffs. A murder victim. Who looks identical to her husband.

As far as Jenny knows, her husband - still alive and well - is an only child. Who is this stranger who looks so much like him? Could he be dead because of a mistaken identity? If so, which of her wedding guests would want her husband dead, and why?

As more wedding guests start to turn up dead, two things become crystal clear. One, the people closest to Jenny are hiding deadly secrets from her. And two, this will certainly be a wedding no-one will ever forget . . .