I think the book in ratcatchers apperance is a reference to the fairytale of the ratcatcher. It's a classic Grimm brothers childrens story, about a city with a rat problem.
damn i cant believe i didnt scan clayface at first i thought lol wut when he was the warden then i looked round and i heard commisioner gordon went back and it was gordon. but it never occured to me to scan him. ill have to go back and scan him lol.
actually, the information about the Ventriloquist is wrong. This game takes place in the period when both Arnold Wesker and Harvey Dent are cured. Infact, Harvey is once again Harvey, after extensive plastic surgery. They're both free to live outside of Arkham Asylum.
However, Wesker is murdered and Two-Face is framed for it. This causes him to relapse back into his neurosis and he becomes a criminal once again.
So this game takes place AFTER The Killing Joke and BEFORE Batman: Face the Face.
Which pretty much seals a timeline for it. Very cool. But I thought I'd make a small correction. Wesker was actually released. ^^
Here's a little fun fact I know of. Burgess Meredith had quit smoking before playing the part of The Penguin for the TV series. When he had to cough he turned the sound into the "Quack, Quack" and it stuck.
has anybody found the hidden sevard head?if not i'm not kidding theres a sevard head sitting in a water filled jar in batman arkham asylum.(i'm seriosly not kidding)