You're whistling in the wind, Mr. Wayne. There's nothing you can do to prevent Arkham City from opening on schedule. 
Batman: Arkham City #5 is an issue of the series Batman: Arkham City (Volume 1) with a cover date of October, 2011. It was published on August 24, 2011.
Synopsis for "Exposure"
The Joker is trying to prolong his inevitable fate by seeing a string of doctors. The latest doctor explains that Joker has been poisoned by a mutated form of the Titan formula, and presents him with a weaponized form of the Titan toxin. Hours following Batman's discovery of Hugo Strange's identity Batman gathers all available, and rather incriminating, information on him. However, Strange is one step ahead and has Sharp announce his involvement in the Arkham City Project in order to prep an alibi against Batman/Bruce Wayne's accusations. He further boosts his popularity by secretly releasing Zsasz and having his forces recapture him, proving that The Gotham Police Force are weak and obsolete and giving TYGER a defining reputation.
Hugo Strange's goal is revealed to be to seize complete control over Gotham City and use Arkham City and TYGER, who are also under Sharp's mind control through hypnosis techniques, as a way to eliminate other super-villains. With all the criminals in Gotham either fleeing the city or being locked up in Arkham City to fight to the death, Strange intends to become the leading power not only in Gotham's political affairs, but also in the criminal underworld. By this point, Strange has even concluded that Bruce Wayne and Batman are one and the same and intends to make use of TYGER, Arkham City, and several alliances he made with other villains to take everything Batman has, break his spirit, destroy him, and take his place and obtain the legend of Batman for himself, becoming, in his own words, "immortal", with Gotham City as his own personal domain.
Appearing in "Exposure"
Featured Characters:
Supporting Characters:
- Alfred Pennyworth
- Vicki Vale
- Commissioner Gordon
- Robin (First appearance)
Antagonists:
- Mayor Quincy Sharp
- Professor Hugo Strange
- Zsasz
- Carpenter (First appearance)
- Tweedledum and Tweedledee
- Catwoman
- Two-Face
- Poison Ivy
- Penguin
- Joker
- Harley Quinn
- Scarface
Other Characters:
- Unidentified Inmate in Unit 68-B
Locations:
Items:
Vehicles:
See Also