It's a classic. I re-read it, and somehow had forgotten EVERY freaking detail. Except of course how totally bizarre the rich Texans are. That stuck with me from decades ago when I read this for the first time. 
 The crime of the murdered wife/daughter was all resolved by halfway through, then the obsessed old rich guy (the original victim's father) just basically went out and hired people and made sure that the murderer paid. 
 Wonder what ever happened to the kid? Time to google. It was the first time I had read about Racehorse Haynes, the attorney for the original murderer. Wow, and attorneys wonder why people think they are totally willing to sell themeselves for money.