Mystery Novel Beta Reader

I'm seeking an experienced beta reader for my mystery novel.

I'm particularly interested in feedback on:
- Plot Development: Is the storyline engaging and cohesive? Are there any plot holes or inconsistencies?
- Character Development: Are the characters well-rounded and believable? Do they evolve throughout the story?

Ideal skills and experience:
- Background in reading and critiquing mystery novels
- Strong understanding of plot and character dynamics
- Constructive feedback delivery

Your insights will be invaluable in refining my manuscript.