Writing a query

I have written the same query many times now. Condensing and twisting the few sentences and adding, rewriting, rewriting, and rewriting, I still am searching for the best words to explain my finished middle grade novel on sexual abuse. Stating facts and a bit of detail from the book, just doesn't do it justice. Movie trailers do it so well......off to read the back of video and DVD boxes. Wish me luck and good vibes.