Better than the first two Twilight novels, but doesn't quite top Eclipse. Much darker than all of them combined.
The great thing about this novella is you don't have to read any books from the Twilight saga (well, maybe Eclipse, the book which it's spun off of) to understand it. It's a lot darker than the Twilight saga, though. The character telling the story (Bree Tanner) is a newborn vampire, so there is a lot of description about hunger for blood of victims. There is also a little sexual content (i.e. a mention of a prostitute) but not nearly as much as in the saga. In addition, the words "d-mn" and "h-ll" are frequently tossed around in this book--words that weren't used in the saga very often.
What other families should know
Great role models
Too much violence
Too much sex
Too much swearing