This book has a decent premise - the Germans actually invaded Britain in WW2, and are slowly taking over the country and imposing their regime. In a quiet Welsh valley, the menfolk disappear overnight to join the resistance, leaving the wives to carry on. It's not totally original, but it is engaging enough to join in.
Unfortunately, this is the closest it gets to creative and impactive writing. Sheers knows the area, and the history; unfortunately, he can impart neither. I know that region quite well, and yet there is nothing in the description that summons it up. Frankly, it could be any rural part of the UK. The female characters are poorly drawn and intermingle - only two of them are of any substance at all. In addition, Sheers fails to convey a sense of the local language or culture - the dialogue in particular feels generic.
The book teeters between an historical novel of what might have been, and an emotional novel of relationships. Ultimately, it manages neither of these convincingly. The plotting appears to unravel once the German soldiers arrive; why do the women's relations never visit, why is there no postal service, where are the traders and businesses they used to deal with? The total isolation of the valley is, really, a bit absurd.
Without spoiling the ending, it is lame and contrived, and a bit on the amateurish side. Overall, this is a book with a decent premise, but carried out without great skill, strong characterisation or realistic plotting.