The Rosie Effect is a heartwarming sequel to The Rosie Project, written by Graeme Simsion. It continues the story of Don Tillman and Rosie Jarman, a couple who met through an unconventional romance. In this installment, Don and Rosie face new challenges as they navigate married life and prepare for the arrival of their first child. With its blend of humor, romance, and workplace dynamics, this book offers a delightful continuation of the characters' journey.