[Updated Review]: I originally would have rated this 3.5 stars, but rounded up to 4. Now I'm rounding down to 3 after rereading the book with a more substantive background in adaptation studies. While Sanders provides some interesting and insightful readings of specific texts, as a theory survey this book leaves a lot to be desired. One of my big complaints is that the definition section doesn't really give definitions, especially of adaptation. Sanders takes us through a number of types of adaptations, and introduces several different theorists, but there's never an actual definition of adaptation as such. The chapter defining appropriation does slightly better because it attempts to define that term, but her definition is something like 'adaptation that's more critical and distanced,' which isn't helpful because 1) we still don't have a solid definition of adaptation, and 2) that definition really depends a lot on how one reads an adaptation (yes, I accept that some adaptations are difficult not to read as homage or as critique, but many are simply reworkings for a contemporary context and may not be primarily focused on commenting positively or negatively on the adapted text).
Again, the main strength I find in this book is Sanders' readings of texts and exploration of how they respond to adapted texts. But for an actual theory of adaptation I'd go with Linda Hutcheons' A Theory of Adaptation any day.
[Original Review]: I gave this book four stars, but I would really rate it a 3.5 if that were an option. I went with the higher number because I recognize that this is part of the New Critical Idiom series, which is a survey of concepts rather than groundbreaking critical works in their own right.
As a survey of adaptation and appropriation theory this does a good job condensing information into a managable and useful form. One of the best sections of this book is actually the bibliography, which links the reader to a ton of more critically thorough resources. I don't want to take away from the quality of Sanders' work, but this book doesn't do much that can't be found in other surveys of the same subject matter.
The other thing to mention about this book is that it consists largely of examples and analysis of specific works. The actual critical points that Sanders makes are largely straightforward, and don't need as many examples as she feels the need to include.