Mark grapples with the loss of his twin sister in this heart-wrenching novel of grief and resilience from National Book Award finalist Carrie Arcos. Mark knows grief. Ever since the accident that killed his twin sister, Grace, the only time he feels at peace is when he visits the bridge where she died. Comfort is fleeting, but it's almost within reach when he's standing on the wrong side of the suicide bars. Almost. Grace's best friend, Hanna, says...