Detective Comics #1099

Jae Lee Gotham City Sirens Cardstock Variant Cover

AN UNLIKELY ALLIANCE! Stranded far from home, Batman, Harvey Bullock, and the Penguin must form a shaky alliance to bring down the age-old immortality cult known only as Elixir. But as tensions rise among this unlikely trio, it becomes increasingly doubtful that this alliance is possible...or that the Dark Knight will ever make it back to Gotham City.