A bold era for Superman continues as all-star creators including Jeph Loeb, Ed McGuinness, Joe Kelly, J.M. DeMatteis and more push the Man of Steel into the new millennium! Stories include Superman's return to Smallville and team-up with Superboy, plus The Joker and Harley Quinn invading Metropolis! Then, in the "Critical Condition" storyline, Superman must search for a missing Lois Lane—while a mystery illness threatens his life! Collects #155-159, #577-581, #764-768, and #99-103.