While eighteen-year-old, Tessa Dark was serving her prison sentence for murder, the world beyond her cell walls changed forever. The thunder came and destroyed the world she had once known. Trapped inside the prison and faced with no future, Tessa's only glimmer of hope is her friendship with fellow inmate Joe McBride.Despite Tessa's fears, Joe decides to go beyond the prison walls to seek help. But when he fails to return, Tessa is determined to go and search for him. To gain her freedom, Tessa must first learn to walk, run, and fight on stilts if she is to survive the new and terrifying world on the other side of the prison walls.'Stilts' - the first book in a new dystopian trilogy by #1 bestselling author Tim O'Rourke.'Zip' (Tessa Dark Trilogy) Book Two Now Available.