Step 1
Agree to help Bert
Talk to Guard Captain
Give him a beer

Items needed: Beer/2gp

To begin, make your way to Bert's house, which is just south of the Watchtower. Speak to Bert and you'll find out that he discovered a severed hand in the sand pit behind his house. Say you'll help him investigate, and he'll give you the severed hand.

Head south to the Dragon Inn, and if you have a beer, talk to the Guard Captain. If you don't, ask the bartender for some cheap beer (2gp). Once you've given the captain the beer, you'll show him the sandy hand, which he will then proceed to drop into his glass of beer. The captain says its the wizards' fault, so he prompts you to go and ring the bell at the front of the Magic Guild.

Step 1
Talk Zavistic Rarve, then Bert
Talk to Sandy in Brimhaven
Search his desk
Pick-pocket him
Talk to Bert
Talk to Zarvistic Rarve

Head east to the Magic guild and ring the bell. Zavistic Rarve will appear. Tell him of Bert's sand problem and he'll say that the hand is from one of his most able students, Clarence!

Make your way back to Bert and ask him about his job. He'll that he works for someone called Sandy on Brimhaven, and he will give you his copy of the Rota. So head off to Brimhaven, and speak to Sandy, who is in a narrow house just across the road from the Brimhaven inn.After asking Sandy about the murder of a wizard, search his desk, and you'll find the original copy of Bert's Rota. With your gloves wielded, pickpocket Sandy, and you will get a small pile of sand (you will be unable to obtain the sand without wearing gloves). This is needed for later on.

Go back to Yanille, and talk to Bert again. He'll say something about the Wizards' meddling with his memory, and gives you a magic scroll.

Head to the Magic guild again and ring the bell. Ask Zavistic Rarve about the sandy problem, and you'll then inquire about Bert's hours. Tell him that Bert doesn't remember changing hours, and you'll show the wizard the magic scroll. Zavistic will tell you that's used in a mind altering spell, and that you should go and seek out Sandy again. Zavistic gives you a magical orb, and tells you to pick up some Truth Serum from Betty in Port Sarim.

Step 1
Speak to Zarvistic about Sandy
Talk to Betty
Make pink dye
Talk to Betty
Use lens on counter
Talk to Betty
Talk to Sandy
Activate magic orb
Ask Sandy about wizard

Items needed: Redberries, White berries, 2 Vials, Lantern lens

Before you leave, withdraw two empty vials, a redberry, a whiteberry and lantern lens; then speak to Zavistic. Ask him about the sandy problem, then ask if he can help some more. If you have a vial, he'll teleport you to Port Sarim. Ask Betty for the Truth serum and she'll give some you bottled water, and say that you must use this to make a rose-tinted lens with some pink dye.

Use a redberry on the bottled water to make redberry juice, then add the whiteberry for the pink dye. Use the pink dye on a lantern lens, to give it a rose-tint. Speak to Betty again, and she'll ask you to stand in the doorway.

Use the rose-tinted lens on the counter with the empty vial on it, and Betty will make the truth serum and give you it. Talk to Betty again and she will add the sand you pick pocketed from Sandy on the truth serum.

Head off to Brimhaven to see Sandy again. Speak to him and tell him any of the options available; you may have to repeat some of them. This will distract him so you can pour the truth serum into his coffee mug. Activate your magical orb, then speak to him.

Speak to Sandy now that he's digested the truth serum, and ask him all the questions. You'll discover that Sandy bribed a wizard to put Bert under a memory spell. Ask about the wizard, and Sandy will tell you he killed him so he wouldn't have to pay him.

Step 2
Talk to Zavistic
Talk to Mazion on Entrana
Talk to Zavistic Rarve

Head back to Zavistic Rarve (ring the bell) with your Intel. You'll give him the magical orb, and he'll then tell you to get 5 earth runes and a bucket of sand. He'll cast a spell, and will make the sand pit automatically refill; giving Bert a well-deserved break.

Zavistic asks that you visit the Entrana sand pit, in hopes of finding the rest of Clarence. Ensure you have no armour or weapons (including Karamja gloves) on you, then head off to Entrana. Speak to Mazion, who is near the sand pit to the west of the boat. Tell him about the murder, and he'll give you the wizard's head.

Take it back to Zavistic Rarve in Yanille and he will organise a burial. Sandy has been sent to jail, and Bert receives a large pension. Congratulations, Quest Complete!