Read from Nov 4th to 20th 2017.
For a book about Vader and Palpatine, it featured them very little and at no time were they in any danger or trouble of any kind, despite the hazards they trampled over. Descriptions of them fighting and using their powers in ways they don't in the movies never sit right with me, and this was no exception. At least it didn't go totally over the top, and the effective protagonists of the book did have a somewhat interesting plot.
Overall, wouldn't bother with it unless you've got nothing better to read.
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