The corpse, sprawled on the ninth green, drew more stares than it did as Miss Georgia. Yet, Sheriff Lightfoot discovered more to the murder than a dead diva.
He uncovers infidelity and blackmail before cornering the killer.The goal. Tell us the goal in the novel.

I'll hint ... To uncover a killer...
Your third sentence must deliver a twist—something that shows your skill and raises the bar. Show the agent why your query and novel stands out. Otherwise, it will fall flat.
Each sentence must raise tension higher and higher. The last sentence must deliver.
This is from Thomas Harris'
The Silence of the Lambs.
A young FBI agent. An evil genius locked away for unspeakable crimes. A plunge into the darkest chambers of a psychopath's mind—in the deadly search for a serial killer...
Note how each sentence grows in length and tension until the last sentences addresses the goal. It's the Golden Triangle. Triple repetition. The Trinity.
Show us. Make us want to read your novel.

Edit: Note the brilliant, and intended, alliteration and assonance. The adjectives and adverbs reflect each other. It looks simple, but those are well-crafted sentences.
Wolfe