Question

Is this thesis good?

This book is not only a mystery novel, but also appeals to readers through the depictions of jealousy and hatred.

Thank you.

Answer 1

I don't think it's a thesis. You haven't stated anything that others would disagree with if they had read the same book.

Check out the non-thesis and the thesis statements here. Then decide how you can rewrite yours so you're clearly taking a stand or a position about your topic.
http://leo.stcloudstate.edu/acadwrite/thesistatement.html