Typical Pratchett fun!
Carpe Jugulum (Go for the throat) is the motto of a family of Vampires who want to take over Lancre and become "modern". this is another in the series of Witch books and follows "Lords and Ladies" chronologically. the problem is that there are already people who hold Lancre...including the new queen, (and witch) Magrat Garlik, Agnes/Perdita Nitt, Granny Weatherwax and Nanny Ogg. As you might suspect, they have definite opinions about the desirability of Vampires as the rulers in Lancre!
A VERY good book, and features some of my favorite characters. Igor, The vampyres, Granny and her headology, perpetually flustered wet hen Magrat and her attempt to insure her daughter's name be spelled correctly, Hodgesargh the Falconer (it isn't really Hodgesargh, but that IS how he usually introduces himself as some vicious hawk or other tries to eat his ear when he is speaking to someone!) Agnes Nitt and her alter ego Perdita, and of COURSE Nanny Ogg and her evil cat Greebo! what a FUN book!
this is a really wonderful book! I am addicted to Terry Pratchett!