Amuse Bouche by Anthony Bidulka.
About Amuse Bouche: Private detective Russell Quant investigates the disappearance of one of the grooms at a gay wedding. The first book in the Russell Quant series.
There were a few things I wasn't crazy about but I liked Quant a lot and I will be looking for a chance to read the other books in the series. Full review: Amuse Bouche by Anthony Bidulka
This was book #9 for the 2nd Canadian Book Challenge.