Heidi and Jason aren't like other couples. Six years ago, Heidi's daughter was murdered. A year later, Jason's son Barney disappeared.

Their shared loss brought them together. By chance, Heidi meets a boy she's certain is her husband's long-missing son - but Jason is equally convinced it's not him. Is Heidi mad? Or is Jason hiding something? And can their fragile marriage survive Heidi's search for the truth?