This collection digs into the dark underbelly of the Turtles' New York, focusing on Leatherhead, Baxter Stockman, Rat King, and of course, the sinister Shredder! Gathering stories from their almost 40-year history, see the characters develop from their early roots in the original comics to their monstrous present day incarnations. Delve into issues from the original Mirage series, TMNT Adventures, and Tales of the TMNT to IDW's current ongoing universe. Uncover crucial tales of tragic occasional TMNT ally Leatherhead, conniving scientist Baxter Stockman, the otherworldly Rat King, and the Turtles' archnemesis, Shredder!