Speak to him to begin the Clock Tower quest. Also, if you have a coordinate clue and have spoken to the Professor at the Observatory, you can bring your clue to Brother Kojo to get a Watch used for coordinate clues.
This Data was submitted by: Motion Man, boyboy126, pokemama, and aarondedo.
We are, as always, looking for people that want to help us out with keeping our guides and other RuneScape related information up to date. Jagex loves to make changes and we need help keeping up with those changes.
If you want to help us out register on the forums if you do not have an account already. Once you post enough to be promoted to an Established Member feel free to apply for Content Editor.