The poems in Interstitial probe the porous nature of existence, examining the ways in which the world, the body, and the self are all liminal spaces. Writing in the interstitial time between the deaths of her parents, and using an array of forms and registers, Leesa Dean turns a clear eye on the difficulties of family secrets, grief that is solitary and grief that is shared, lost languages, and violence, recovery, and resilience. These poems move from injury to reconciliation, demonstrating that we are strongest when we allow our shared narratives to weave us into a greater constellation than our individual lives afford.