Thriller about two brothers with abusive father, which meets after years when mysterious murders begin to take place in the vicinity of an older brother, a well-known singer

[Iveta]

Good day. I'm looking for a book for my aunt. The book begins when the brothers were young. Their father beat them, and the older brother, in order to protect the younger one, asked the truck driver, who asked if he was a good man, if he would look after the younger brother for a while and never return for him. At home, he said that his brother drowned in a swamp. Years later, the older brother is a well-known singer who has a blind girlfriend. But murders begin to take place in his area, and his brother takes the scene as an FBI agent who took charge of the murders. If any of you knew anything, it would be great. Thank you.

[Kris]

Iveta, around what year did your aunt read this book? A range of years is fine.

What type of singer is one brother?

Years later, are the two brothers strangers? How do they meet again? Is the location a well-known US city?

What do the murders have in common?