Yes, unlike a summary you are describing the *whole* book, movie, etc. You include what would be considered spoilers, and how it ends.
It's a popular opinion that the more beautiful you are the more like you will get a job you applied for. Anyone would like to see a pretty face when they walk into work. Just like in school, reputation as well as beauty could mean everything, your teacher moving your grade up a few points or how they decide to discipline you. It goes the same for your job, depending who your working for.
Something like that, sorry if its not what your looking for.
Answer:
It makes the reader feel confident that Ellery has narrowed down the suspects who may have committed the crime and will proceed to find one of them guilty.
Explanation: