It's story time! The G.C.P.D have a mysterious corpse, a magical box, and a murderer's row of the city's most dangerous villains sitting in a jail cell. Now all they need to figure out is what exactly happened. Fortunately, one suspect is willing to talk. Unfortunately, it's The Joker…

Joker provides the GCPD with another missing piece of the puzzle involving two faces and two masks: Black Mask has travelled halfway around the world on the hunt for one of the pieces of the MASTER ENGINE, but someone is following him...someone with a gun aimed AT HIS FACE. The mystery deepens with not one but TWO double-crosses in the hunt for who killed the riddler!

The mystery of “WHO KILLED THE RIDDLER” heats up as Joker, now incarcerated and under interrogation by Commissioner Jim Gordon, retells his version of events, starting with the victim himself on the hunt for an all-powerful weapon. How did the other Gotham villains get involved, and why? What does this weapon do, and why does Riddler want it? Who had skin in the game, and who could stand to lose everything? It’s a whodunit spiraling out of control, retold by the world’s most unreliable narrator. See if you can spot the clues and solve the puzzle!

One big puzzle, two winged players -- Killer Moth and Man-Bat must fly together to get a seat at Riddler's table, but from Joker's POV, there's a blood debt to be paid (and not just Riddler's!)

"Batman created by Bob Kane with Bill Finger; Superman created by Jerry Siegel and Joe Shuster, by special arrangement with the Jerry Siegel family."

There's more than one piece to this puzzle, and more than one POV -- Two Face, no stranger to a second opinion, gives his side of the story, and what happened after he was shot by Black Mask!

The terrifying Sampson family is ready to exact their revenge on the Clown Prince of Crime for the murder of one of their own during A-Day! Will Gordon risk his life to save…The Joker? The shocking series continues with the most horrifying issue yet! Backup: Punchline and Harper Row go head-to-head for the life and safety of Kelly Ness! If Harper loses, the radicalization of young people in Gotham City will know no limits!

Main story: It’s murder and mayhem in the jungles of South America with pits The Joker pitted against everyone hunting him! He’s prepared for this massacre in a way that only the Clown Prince of Crime can…but what secret does he whisper to Jim Gordon as the bullets fly?! What is the TRUE mystery?!

Très bien-the Joker visits Paris! Gordon must get to Joker ahead of the Sampsons, but has the Clown Prince set an ambush for his pursuers? Plus, Barbara fights for her life after her introduction to the new Talon! Punchline backup: The search for Kelly Ness-Punchline’s former friend who is also in Blackgate Penitentiary-begins.

The Justice League has long protected Earth from all manner of foreign and alien invaders over the years, always keeping a vigilant eye to the skies for the next threat. But what if the threat was already walking the Earth…hiding in plain sight…watching…waiting for their moment to strike… In the tradition of DCeased comes a terrifying new series that begins from the twisted minds of James Tynion IV (Nice House on the Lake, Something Is Killing the Children), Matthew Rosenberg (The Joker Presents: A Puzzlebox, 4 Kids Walk into a Bank, Hawkeye), and Otto Schmidt that will tear the Justice League apart in their war with the undead! This volume collects DC vs. Vampires #1-6, the first half of this bloody battle.