Lockdown

Without more specific information about which 'Lockdown' book is being referenced, this could refer to several different titles. If referring to Alexander Gordon Smith's 'Lockdown' (Escape from Furnace series), it follows a teenage boy wrongly imprisoned in an underground maximum-security facility who must survive brutal conditions and attempt escape. The story explores themes of injustice, survival, friendship, and resilience in the face of systematic oppression. Due to the multiple books with this title, parents should verify the specific author and edition to ensure age-appropriateness.