PCs paid to protect the leaders of the losing side of a gangland war; they need to stop assassination attempts.

Spoilers follow. Interesting premise, well executed. It is a nice twist to have three identical assassins, the players might expect (or find out about) two, but then the third could be an unpleasant surprise. A good framework if the players decide to stop the assassins: there are useful notes on how the assassins might react. However I would have liked to see a couple of other approaches discussed (with some supporting material): kill Udan, the paymaster of the assassins; switch sides and deliver Jester and allies to Udan themselves. The former should be difficult, but the PCs might pull a "Joker", and deliver "the body of Jester", and launch a surprise attack. In the latter, if the PCs cut a deal with the assassins, all may be well, but if the assassins are cheated of their fee they might not be happy.