Detective Comics #698 1996

Detective Comics #698, published in July 1996, features "The Tomb," part three of the "Locked Down" storyline. Batman, Robin, and Nightwing work undercover to apprehend Lock-Up, a former police officer holding villains captive. The mission takes a turn when Robin becomes Lock-Up's prisoner. This issue is notable for its focus on the Lock-Up character and the team-up dynamics of Batman, Robin, and Nightwing, with Batman also appearing as Matches Malone.