Narrative nonfiction for the middle grades is rare enough, but good, compelling, readable narrative nonfiction is startlingly difficult to find. This fits the bill, 100%. An informative look at the Salem Witch Trials that is easy to read, interesting, but not...well, not any more sensationalist than it has to be (being an account of an event that was entirely sensationalist as it happened).
The artwork was pretty sensationalist--very dark, reds and blacks and white highlight spaces, depicting demon mouths breathing out flocks of doves and a dozen women drinking blood from goblets, but I think what the art does more than anything else is highlight the insanity of the accusations. It's so overblown that you just have to tilt your head and think, "So people really believed this was happening? Whackjobs." Which is...well, that's the moral of the story right? That's why it's still taught in schools. "Don't start rumors; it makes you look crazy."