Millions of U.S. children are separated from a parent each year because of parental incarceration in prison or jail. The vast majority of people who go to jail or prison will be released eventually, making parental reentry and parent-child reunification a common process in families affected by incarceration. Despite the importance of the reentry period, few studies have focused on how young children cope when a parent returns from jail or prison. This article summarizes what little researchers know about children's reunion with their parents following parental incarceration, parental experiences of reentry, and what can help children and families.