Heidi is married to Jason have both lost children. Heidi's daughter went missing some time ago with devastating results and Jason's son is still missing. Heidi catches a glimpse of a little boy who she is convinced is Jason's son and even though he says it isn't Barney she will just not let it go. She becomes obsessed with proving this little boy is the missing Barney and puts herself in escalating danger whilst doing so. Jason has his own secrets though and makes Heidi sure she isn't being told the facts.I didn't warm to Heidi at all but I couldn't put the book down as I just had to see what happened next. I was surprised at the end and had to read the ending twice so that I could be sure of what I had just read. I would say this is one of the best debut books I have ever read and would like to thank NetGalley for my kindle copy in exchange for an honest review.