Den of Thieves

From publisher blurb: Adventure Framework 36 Den of Thieves consists of: A downloadable, bookmarked PDF (11 A4 pages, excluding cover & credits, in both parchment and white backgrounds). The Core Adventure (in this instance, the PCs are bodyguards to a gang leader, whilst assassination attempts are made by a rival guild. Can the PCs track down the assassin and kill him first?) that will occupy 3-8 hours of session time with Minimal Prep. Rumours & Hooks suggestions.