1. So as not to catch the Plague you will need a Gas Mask. Edmond tells you that his wife Alrena will make you one. Talk to Alrena, she will ask you to get her Dwellberries for the Mask. These can be found in McGruber's Wood north of Ardougne.
   
   
2. Go to McGruber's Wood (east of Seers' Village, north of Ardougne and west of the Fishing Guild). Enter through the Loose Railing ¾ of the way up the Fence, along the west side of the Wood. You only need to take one Dwellberry.
   
   
3. Return to Alrena with the Dwellberry. She will make a Gas Mask for you.
   
   
4. Talk to Edmond and he will tell you to enter the City by digging a Tunnel underground into the Sewer from his Backyard. The only problem is that the Ground is too hard to dig in. This is where the Buckets of Water come in. Use the Buckets with the Hard Soil, or use one on the Soil, refill it and repeat four times.
   
   
5. Dig with your Spade and you will fall into the Sewer. Go southwest to a Grate. Use your Rope with the Grate, then go back and talk to Edmond. Return to the Grate and climb through it into West Ardougne.
   
   
6. There will be a Man named Jethick near you when you exit the Sewer (White dot on Map). Tell him that you are looking for a Woman named Elena. He will tell you that she was staying with the Rehison Family. Jethick will also give you a Book in exchange for the Picture of Elena to give to the Rehison Family as long as you're going there anyway.
   
   
7. Go the Rehison House on the northern edge of Town (Blue dot on Map). When you try to enter tell them that you have a Book from Jethick. Once inside ask about Elena. Go Upstairs and talk to Milli Rehison. Milli will tell you that Elena was kidnapped and is in the House in the southeast Corner of Town (Green dot on Map).
   
   
8. When you try to enter the House a Mourner (Plague Healer) will say that you cannot enter the House because it has been touched by the Plague. The only way in is to have a Pass from the Head Mourner or Bravek, the Town Leader.
   
   
9. Go to Bravek's House (Red dot on Map) and tell the Clerk that it is urgent you see him. The Clerk will let you in.
   
   
10. Speak to Bravek to find out that he can't talk today as he has a massive Hangover. To cure his Hangover Grind the Chocolate to Dust, add it to the Milk and add Snape Grass to the Solution. Give this to Bravek, he will thank you and give you a Pass to enter the House.
    
    
11. Return to the Plagued House that Elena is supposed be in and enter. Go down the Stairs and you will find Elena locked in a Cell. Talk to her, go back Upstairs and search in the Barrel, you will find a Key in there. Go back downstairs and release Elena.
    
    
12. Go back down into the Sewers and talk to Edmond to receive your Reward.
    

Congratulations! Quest Complete!