First published as Whatever Makes You Happy, the hilarious and moving novel about mothers and their adult sons will soon be a Netflix original movie starring Felicity Huffman, Angela Bassett and Patricia Arquette

Three sons. Three mums. One week.

Matt, Daniel and Paul were childhood friends. Now in their thirties, they've lost touch and have only one thing in common: their mothers.

Little do they know that, having spent a cardless Mother's Day discussing how their emotionally dysfunctional offspring should be settling down, Carol, Gillian and Helen have decided to pay their wayward sons a visit. On the same day, they turn up on their sons' doorsteps, uninvited and unannounced.

Their plan is to reestablish the mother-son bond by moving in for one week. Just a week. Surely that's not a lot to ask...