[sufue]

I've never read any of Stuart Kaminsky's CSI series, but have read a few of his Porfiry Rostnikov and Toby Peters books, and enjoyed them. Now Blood on the Sun, which is CSI #2, has dropped to $0.99 at Kindle and Kobo US, which is maybe worth trying...

Kindle US: https://www.amazon.com/Blood-Sun-CSI...dp/B000GCFCSC/
Kobo US: https://www.kobo.com/us/en/ebook/blood-on-the-sun-1

Spoiler:

Detective Mac Taylor is a dedicated crime scene investigator who believes that everything is connected and everyone has a story. He and Detective Stella Bonasera lead a team of crack forensic experts through the gritty and kinetic world of New York City as they piece together clues and eliminate doubt to ultimately crack their cases.

A modest home in a suburban Queens neighborhood is the unlikely site of a grisly crime scene: a married couple and their daughter are found brutally murdered. Missing from the scene is the couple's young son, and Mac Taylor and Danny Messer soon uncover signs of a possible kidnapping. Can they find him before it's too late?

In a heavily Orthodox Jewish neighborhood in Brooklyn, the body of a devoutly religious man is found ritually displayed on the floor of his synagogue. Stella Bonasera and Aiden Burn initially suspect a fringe fundamentalist group that has had run-ins with the victim's congregation, but the group is led by a charismatic and antagonistic man who does everything he can to stonewall the team's investigation.

Two very different crimes, with one thing in common: CSI investigators who won't stop until they uncover the truth.