Prisoner of the Penguin! (Batman: Comic Chapter Books)

Once again, Batman catches the Penguin in the act, meaning more prison time for the villain. Since the fowl felon has a bad habit of escaping his cell, the Dark Knight delivers him to a privately run, impenetrable prison this time around. But even from behind solid bars, the Penguin finds a way to gain the upper hand... and appoint himself warden! With all the thieves, thugs, and crooks under his sway, the Penguin hatches a plan to unleash his new army on Gotham City. The only shot Batman has at preventing the Penguin's entire army from flying free is to go inside the prison and battle the bird-brained villain on his own turf...