My brother Randy switched genres from Fantasy to Murder Mystery.
I just finished the 4th novel in his Peter Galloway, Private Investigator, series:
Murder on the Mall (short story)
The Bridal Veil Murders
Book 4 is set in Niagara Falls.
Things go from bad to worse when they discover murder at the fair, along with clues suggesting a runaway teen may be next.
Galloway and Ford find themselves pitting their wits against a gang of ruthless drug traffickers, only to discover the criminals are more than meets the eye.