The book I read is called Nimona. The author/illustrator is Noelle Stevenson. The genre is fantasy. The Lexile # is 350. There are 266 pages.
This girl named Nimona breaks into a villain's, Ballister Blackheart, lair and she claims to be from the agency. Blackheart could already tell she was joking, so Nimona told the truth, she really wanted to be a villain.
Blackheart allows Nimona to work with him, but he soon discovers that Nimona is more than what meets the eye. She’s actually some type of shapeshifter. Which he realizes could be really useful for his plans.
Blackheart finds out that the Agency has been growing a very rare and poisonous plant called Jaderoot. He assumes that they will use the Jaderoot for something really bad, like taking out Nimona because the Agency thinks she’s a threat.
Blackheart wants the city to know that the Agency is doing bad things, so he sent out Nimona with apples injected with an illness that won’t kill whoever eats it. Nimona shifted into an old lady pretending to be crazy so she could plant the apples at a farmers market.
FARMERS MARKET !!FRESH APPLES!!
The Agency eventually caught on, so they tried multiple times to capture Nimona but they failed. But after making Nimona really angry, she went after the Agency and got caught. She was put into a tube and was tortured with electricity.