Three decades ago a young writer and artist met in the offices of a telephone sales company. They were both novice talents in search of a way to break into the comic book medium. In this case, they were following up on reports that members of said phone firm were considering funding an “exciting” new anthology spotlighting fresh creators. As is often the case with such ventures, the anthology never panned out, but it did provide the opportunity for the writer and artist to have a chat. They decided they would like to work together, and, after a near miss or two, produced a graphic novel. First published 30 years ago, Violent Cases is the first collaboration between Neil Gaiman and Dave McKean, whose partnership has evolved over the following decades into one of the most distinctive in the medium’s history. Few others creators have been as closely associated with the other as they have. That history began with a tale of childhood, gangsters and that ever elusive thing called memory.