Apples Never Fall by Liane Moriarty

Liane Moriarty's latest offering is an Aussie family drama featuring the renowned tennis obsessed Delaney family, the tall, handsome Stan, tennis coach extraordinaire, and his wife, Joy, the force behind their tennis business. They have 4 adult children, the unable to settle and plagued with mental health issues, Amy, the solid, reliable, handyman and business communications teacher, Logan, the slick wealthy divorced trader, Troy, and the migraine troubled physiotherapist, Brooke, struggling to make ends meet with her business. Joy and Stan have retired, having sold their tennis business, but retirement does not sit well with a couple who have led such active and busy lives, their long and happy marriage of 50 years is beginning to show signs of strain.
The 69 year old Joy is desperately repressing her resentments and desire for grandchildren, placing her hopes on Logan and his partner, Indira, and Brooke's 10 year marriage to Grant, in expectation of them having a child soon. The only problem is that Indira has left Logan, and Grant has separated from Brooke, and neither Logan nor Brooke are keen on sharing this news with their parents. The story begins with the adult children discussing their missing mother, Joy had sent them all a text saying she was going off grid for a while. The only thing is that it is so unlike their mother to go off on her own, she left no note behind, and their father's face has what looks to be nail scratches, all of which has them worried, should they report Joy missing to the police? The narrative goes back and forth from the previous September and the present, the arrival of a strange woman, Savannah, turning up on Joy and Stan's doorstep, claiming to have been abused by her boyfriend. She is welcomed by Joy and Stan, taking up residence with them, but who exactly is she?