Dan Kavanagh 
Going to the Dogs [EPUB ebook] 

Strange things happen in the countryside. And for bisexual private detective Duffy, this is his strangest case yet. Summoned to a country mansion following an unusual murder, Duffy finds the house awash with potential suspects. Does Vic Crowther, the man who called on Duffy in the first place, have a far more sinister motive up his sleeve? Or perhaps his wife, the ex-page three model, knows more than she’s letting on . . .