The Guests by Rosie Hedger

A married couple borrows a luxurious home on the Norwegian fjords, entangling themselves in a web of lies when they pretend to be the owners. Chilling, darkly funny psychological suspense by the author of The Bird Tribunal.
Married couple Karin and Kai are looking for a pleasant escape from their busy lives, and reluctantly accept an offer to stay in a luxurious holiday home in the Norwegian fjords. Instead of finding a relaxing retreat, however, their trip becomes a reminder of everything lacking in their own lives, and in a less-than-friendly meeting with their new neighbors, Karin tells a little white lie...
Against the backdrop of the glistening water and within the claustrophobic walls of the ultra-modern house, Karin's insecurities blossom, and her lie grows ever bigger, entangling her and her husband in a nightmare spiral of deceits with absolutely no means of escape...
Simmering with suspense and dark humor, The Guests is a gripping psychological drama about envy and aspiration... and something more menacing, hiding just below that glittering surface.