Ring of Roses, the graphic novel by Das Petrou and John Watkiss, is in development as a feature film by Spice Factory and Persistent Entertainment, according to Variety.  The story concerns a barrister and the criminal he hires to help track the killers of priests in an alternate 21st century London. 

Ring of Roses was originally published as a four-shot miniseries by Dark Horse in the early 90s, then collected into a trade paperback edition by Image in 2005.