Harrison, Lewyn and Sally Oppenheimer are triplets who are a result of in vitro fertilization. They have little in common with the exception of their parents and the same last name, and they are not very fond of each other. When they are about to leave home for college, their mother becomes frightened at the thought of being an empty nester. She decides, without the support of her husband, to take the leftover embryo that has been frozen for seventeen years, find a surrogate mother, and have a fourth child.

This is a perfect summer read. The Latecomer is a great family saga with relatable characters and a plot that urges one to keep on reading.