Mike Draper's novel

[michael draper]

In "Splattered Blood" a woman's husband was in charge of security for a basketball team in New England.
A number of injuries and deaths occur to the main players and when he checks it out, he's killed and made to look like suicide.

His widow calls her financial advisor stating that she knows he wouldn't do that and deprive the family of the $500,000 of life insurance which wouldn't be paid if suicide.

When he looks into it, he gets proof that it was murder.

The widow takes some of the insurance money and hires the financial advisor and her brother to find the killer.