The Book Of Jhereg by Steven Brust

In a world where humans and Dragaerans coexist, a witty and resourceful assassin named Vlad Taltos navigates the treacherous underworld of organized crime. Armed with his magical skills and accompanied by his loyal jhereg familiar, Loiosh, Vlad takes on a dangerous contract that plunges him into a web of intrigue and deception. As he maneuvers through the complex hierarchy of the criminal empire, Vlad must rely on his cunning and charm to outwit powerful adversaries and survive the deadly game of power and betrayal.

Purchase from Bookshop.org