Suggest me a crime/mystery book?

I'm not that familiar with the genre, these are the tv shows I enjoyed so you get an idea of what I'm into:

Agatha Christie Hercule Poirot

Midsomer Murders

Monk

So yeah I love the mystery to be similar to these shows no graphic details about the murders or torture or dark subjects. But No comedy unless it's very few moments here and there with characters having fun with one another….I hope it's clear what I mean.

The detective is a normal person who is smart, not the type to be like. "I'm too cool to smile."