What we have here is an origin story which spans around 1300 years and involves close encounters with The Phantom Stranger (who would appear to be her nemesis), The Demon, Neil Gaiman's perky Death, Zatara (father of Justice Leaguer Zatanna who happens to be a close friend of John Constantine), and finds herself involved in the Jim Corrigan incarnation of The Spectre and in settings which include Camelot, the Mongol Empire, Revolutionary France, Victorian London (just guess which historical character is the focus, and I doubt if you'll be surprised), and America on the verge of entering the Second World War.
All of the first ten issues are included making this a good value package and worth picking up. To be completely honest though, it's really a three and half stars rating as the stories aren't quite as satisfying as they should be. There's something about them which just doesn't fully work and, thinking about it, I feel it's the constant going round and round in circles with The Phantom Stranger. However as that seems to have been resolved by the end, future issues (if it isn't cancelled before its time as so many Vertigo titles are) should see an improvement. The art is consistently good.
Worth a punt.