There's Always Someone Roguer than You

 is a quest.

Obtaining the Quest
Talk to Vil Smisse (7,-5).

Note: You must have finished Coming Across a Beak. You also must be at least level 60.

Step 1: A poisoned chalice
Vil Smisse chose to play the rogue way: the slyness.

Bring to Vil Smisse: x1 Rasputin Cake

Reward: 10000 XP.

Step 2: Hiring Hitmen
'Vil Smisse will not be able to use the Rasputin Cake. He then falls back on the direct attack. For that, he wants to hire assassins and he needs money.'

Bring 30,000 kamas to Vil Smisse.

Reward: 76,000 XP.