I think books like this are probably the hardest to review -- ones that have received consistently glowing reviews but that just don't really seem to appeal to me, for whatever reason. 
 To be fair, I really just don't enjoy action-y, horror-y type novels as a rule. Maybe it's because they tend to sacrifice character development for the next big plot point -- I'm not entirely sure. But, based on the reviews I'd seen on YouTube, I decided to give LOCKDOWN a shot anyways. 
 Beginning with plot, basically it's about an underground prison, called Furnace, that was built to house only kids under 18. Once the children get to Furnace, there's no parole -- but there is plenty of evil, in the form of creatures in gas masks, monster-like beasts, and scary men in black suits... all set to stalk and kill at a moment's notice. 
 The first half of the book is generally Alex, a boy convicted of a murder he didn't commit, acclimating to his surroundings and getting to know the people around him. The remainder of the novel is his plan to escape -- a feat attempted but never before accomplished. 
 I'm not sure exactly what it was about LOCKDOWN that failed to keep my attention, but I was honestly just bored. Sure, there were plot twists and turns, but nothing really appealed to me or felt relatable or interesting or exciting at all. The writing wasn't bad -- don't get me wrong -- but it just didn't leave me wanting more. And the ending? I'm sure this was intended to be a magnificent cliff hanger, but for me it just felt like I'd wasted my time for nothing. 
 If you love action-packed books with a horror twist, I'm sure you'd love LOCKDOWN. Again, it's just not my genre, so I'm probably not the best to give an unbiased review.