Warning: This is not a comedy (as you might expect about a book that is centred around a suicide spot). The easy balance between Chick Lit and Lad Lit, that had been struck in the earlier books has been abandoned. This deals with relationships in a much more worthy and unsuccessful way.
The first thing you will notice about the authors' fourth (joint) book is that it is written in the third person. This means a loss of what had been the writers' strongest feature, the way you could completely identify with the characters. There's no Jack, H, Amy, or Matt (etc) persona to slip into. You end up not feeling so close to events, and this distances you from the protagonists. It doesn't help that, of the four characters, only two (Jimmy and Ellen) are properly filled out: You never get to identify with Ned, and Verity is no more than a shadow.
You are left with a feeling that the authors have decided to change tack since the success of "The Boy Next Door" and go for a more earnest, serious way of writing. This sacrifices the humour of the first two books (the brilliant "Come Together" and even better "Come Again") and you end up with a book that seems rather po-faced. You want the characters to crack the odd smile, but they are too busy being traumatised to engage you.
This is a pity. Lloyd and Rees are obviously talented writers, and it would be unfair to expect them to churn out clones of the "Come..." books, but I would like to see them lighten up a bit! Their third book had less humour, and has things in common with the new novel. Like "The Boy Next Door" it has a car-related death, and there is a convenient, straight-forward break up of one relationship to allow the start of another one, between two of the main characters. (Again, the minor character from the old relationship remains resolutely under-written, so guilt doesn't have to intrude on your happy ending.) There is too much sniping and arguing, not enough banter.
This is one of those three-and-a-half star books. Lloyd and Rees are extremely talented, and this book, although it seems to have been written in their sleep, is still better than most of the dross on the shelves. It's just that they've done so much better in the past. As a huge fan, I will wait for the next one hoping they hit their form again.