Fantasy - Dwarf Guards/Cops Are Summoned to the Council, After a Tough Shift by Paul Woodson

Carnifex & Thumil, Dwarf guards, have just dealt with a mysterious murder in their midst. As they work out the implications, they are hastily summoned to the High Council by a ghoulish emissary.

CARNIFEX, by D.P. Prior, is on sale at Audible.com:

http://www.audible.com/pd/Sci-Fi-Fantasy/Carnifex-Audiobook/B01C6CUIXS/