Really good stuff. Made me pick up The Dark Victory, also considering re-reading YEAR ONE and I'm also now watching GOTHAM - the new TV series. Hi yaaa. Batmode? ON! 
 The Long Halloween is the perfect introductury story to Batman IMO. It takes place early in Batman's career, we get to know Jim Gordon a little better. We get to learn how Harvey Dent became TwoFace - damn that blow was hard. Catwoman, Poison Ivy, the Mad Hatter, the Joker - all our favorite villains get some panel time and this newbie right here (aka me) was really excited to meet some of them for the first time. :D 
 The acutal case: Finding the Holiday Murderer - a killer who picks a holiday each month and kills a member of the mafia family Falcone on that day - was really good. I liked all the twists (even tho the last reveal at the end was just a little too much for me but well... ya can't have everything).