After her brother was killed by a suicide bomber in Afghanistan, Annie Sklaver Orenstein was heartbroken and unmoored. She searched for guides on how to work through her grief as a mourning sibling—and found nothing. More than 4 million American adults each year will lose a sibling, yet there isn't a modern resource guide available that speaks directly to this type of grief that at times can be overshadowed by grieving parents and spouses and made even more difficult by the complexities of sibling dynamics. Annie uses her own story and those of others to create the empathic, thoughtful, practical resource that she sought. Ultimately, readers will find ways to experience their sibling's presence within themselves and acknowledge their legacy. With practical strategies rooted in proven grief processing techniques, trauma recovery, and psychoanalysis, this truly supports mourners through the unique experience of sibling loss.