Indhold: Why sisters? -- The power of complicated feelings -- why the sibling trauma is universal / Younger sisters and other variations -- The sister knot -- empathy and identity between sisters / Shared minds -- how sisters find and resist family roles / "Just like" and "completely different" -- Protection and resentment -- the interweaving of female bonds / Sisters and friends -- Group dynamics among sisters -- The power of sister stories -- when one sister outshines the other / Success and insecurity -- a lifelong tie / Sistering -- Frequently asked questions.