A genius prison designer breaks into the death-row prison she herself built.
Her sister Elena has been framed by a wealthy family and sentenced to death, with only two months until execution. With appeals hopeless and the law controlled by capital, Mara burns every bridge and deliberately commits a crime to get herself locked up in Blackridge Women's Prison.
Inside, gangs rule and guards are corrupt — every step is deadly. Mara navigates between the two prison bosses, recruits Dex — an inmate with extraordinary skills — and uses her memorized blueprints of the prison's hidden flaws to sneak into death row and rescue her battered sister Elena.
Riots, manhunts, leaked blueprints, armed troops sealing every escape route — every step is a dead end.
