The Adults by Caroline Hulse

Claire and Matt are divorced, but both want to spend Christmas with their seven-year-old daughter, Scarlett. They decide to go to a resort with Scarlett and their respective partners, Patrick and Alex. Alex is not thrilled with the idea, especially since her friend, Ruby, figures it can only end in disaster. Patrick, meanwhile, is upset because his ex-wife has isolated him from his two children and he hardly gets to see them. Soon after arriving at the Happy Forest holiday park, tensions arise between the four adults, and Scarlet's dislike of Alex by way of her imaginary rabbit, Posey comes to the surface. When one of the adults is injured, the reader is left to wonder, how did things get so out of control? The Adults is great read-alike for the novels of Liane Moriarty.