Nine Perfect Strangers by Liane Moriarty

Nine people gather at a remote health resort. Some are here to lose weight, some are here to get a reboot on life, some are here for reasons they can’t even admit to themselves. Amid all of the luxury and pampering, the mindfulness and meditation, they know these 10 days might involve some real work. But none of them could imagine just how challenging the next 10 days are going to be.