"When Flannery, a young scientist, is forced to return to Austin from five years of research in Nigeria, she becomes split between her two homes. Having left behind her loving fiancé without knowing when she can return, Flan learns that her sister, Molly, has begun to show signs of the genetic disease that slowly killed their mother. As their close-knit circle of friends struggles with Molly’s diagnosis, Flannery must grapple with what her future will hold: an ambitious life of love and the pursuit of scientific discovery in West Africa, or the pull of a life surrounded by old friends, the comfort of an old flame, family obligations, and the home she’s always known. But she is not the only one wrestling with uncertainty. Since their college days, each of her friends has faced unexpected challenges that make them reevaluate the lives they’d always planned for themselves."--Inside cover.