Sex, Death & Canapés (Sex, Death and Dinner Book 1) by Petrina Binney

Link: Website

Blurb:

Fiona Weaver-King has a secret.

She doesn’t love her husband. She’s never loved her husband. He’s a male chauvinist pig and a liar, and no one would blame Fiona if she left him with nothing but a bottle of brandy and his moustache.