Return to the front room and kill An Unseen Hand taskmaster. Once you do this, Rollus the Sly should turn into Rollus the Sly (12). Fippy will run out of the zone - this is why you have to talk to him first!
To get this quest when you are a high level, mentor down to level 10, strip off ALL armor and weapons, turn off all buffs, and then only auto attack the Unseen Hand. It is best to pull the Unseen Hand into the room where Fippy and Rollus is. Rollus will become aggro once Fippy runs out of the room.
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I have discovered a thieves den in the The Down Below and looted a sort of merchant manifest. I discerned that Constable Arathur needs evidence of such illicit operations. I will try to follow the hints in the manifest to discover the Qeynos merchants involved in this ring and fool them into signing this manifest thinking me a lackye of the thieves.
Talk to Karg Icemoore "K.I." on the second floor of "Fish's Ale House and Inn" in Qeynos Province District (In Qeynos Harbor) ( 818, -17, 54 ) Copy/waypoint 818, -17, 54.
Talk to Borden Mannus "B.M." at "The Mermaid's Lure Tavern" in Qeynos Province District (In Qeynos Harbor) ( 935, -19, 9 ) Copy/waypoint 935, -19, 9.
Talk to P.T. Irontoe "P.I." at "Irontoe's East Tavern" in Qeynos Capitol District (In North Qeynos) ( 338, -20, 155 ) Copy/waypoint 338, -20, 155.