Katsfan,
I highly recommend these books and the Introduction To Barnabas by the Fest. All are invaluable, IMHO, sources for storyline breakdown/episode synopsis. And if you're a fan-fiction writer they are a must! The only one that Kathleen has not put out yet, to my knowledge at least, is part 2 of the 1897 Concordance and who knows, maybe she'll bring it out for the 40th! And hopefully the Fest will also bring out their Concordance of the Pre-Barnabas eps, I believe it was called The History of Dark Shadows or something like that.