The Roman Hat Mystery by Ellery Queen

TW: casual racism
The latest play sensation includes the sounds of gunfire and a dip into the underworld of the mob. What it's not supposed to include is a dead body. But such is the world's introduction to Ellery Queen and his father. And it was a good mystery with the now famous "stop" that lets readers try and deduce for themselves who would want to kill a lawyer by poisoning him with gasoline. 
I vaguely knew about this story but it was really the Classic Mysteries podcast that sparked my interest. I wish there had been some warning about the Queen's houseboy Juno and some of the terms used to describe him that definitely wouldn't be used today.

Three stars
This book came out June 27th, 1929
Followed by The French Powder Mystery
Borrowed this audiobook from Hoopla
Opinions are my own

The Origin of Evil by Ellery Queen

 Ellery is in Hollywood. When he’s sunbathing in the nude one afternoon, he is interrupted by

 a young girl who is convinced her father was murdered. The means? A threat in the form of a dead dog. Now the man’s business partner is being threatened as well. Roger Priam, the business partner, is in a wheel chair and his wife, Delia, is running around with his private secretary, Alfred Wallace. Delia has a son who is living in trees and has a crush on the girl who came to Ellery in the first place. 
The mystery ends up being incredibly convoluted and Ellery comes off as a major asshole (he lusts after Delia who does nothing to encourage him then gets pissed off when he finds out that she’s sleeping with the secretary - why? He wanted to sleep with her too. Boo, Ellery, boo).
I heard about this book on the Classic Mysteries podcast.

Two stars
This book came out 1951
Borrowed from the library
Opinions are my own