Biohazard

Starting Up


To begin, go to East Ardougne and talk to Elena in the house just east of the one her parents live in (where the Plague City quest begins). She will tell you about how she was able to collect some good samples of the plague, but unfortunately the Mourners took all of her equipment. You will need to sneak back in to try to find it. She suggests that you go talk to Jerico, since the tunnel you used to get in before has been sealed in.

Getting in


Jerico lives in a house just south of the northern bank in Ardougne and North of the altar. He tells you he has arranged for Omart to help you with a rope ladder. He will tell you to go find Omart. Search the cupboard nearby to find some bird feed and grab a pigeon cage from the back yard before you go. Omart is found west of Ceril Carnillean's house in East Ardougne, just south of the castle. He is located outside of the south-east corner of West Ardougne's walls. He will tell you to talk to Jerico but this step is not necessary if you retrieved the bird cage and bird feed already.

Now head to the gate in West Ardougne. Stand in the corner where the two spiked fences meet and inspect the watchtower fence. Use your bird feed on the watchtower fence to throw it up all over the tower, then release the pigeons. They'll immediately fly into the tower to eat. This is just the distraction you need. Go south to Omart and talk to him. He'll help you get over the wall.

Infiltrating Mourner HQ
Head to Martha Rehnison's house from Plague City. It is to the north of the dungeon located in the middle of West Ardougne. There is a Rotten apple around the east side of the house that you should pick up. Look at the fence to the east and you'll see a place where part of the fence can be squeezed through. Once on the other side and in the back yard of the Mourner HQ, use the rotten apple on the cauldron (use the right-click menu for this, if you eat the apple you will not get hurt but you will need another one), and then navigate through the fence again.

Walk around to the front of the building, and try to get inside. You will be informed that several mourners are ill with food poisoning, and they are waiting for a doctor. Head to Nurse Sarah, who is in the large building south-west of the altar. Search the box in her house to obtain a doctor's gown. If you are low-level, use the drop trick to obtain two, and bank one before going to fight the mourner. Put it on and go back to Mourner HQ again. Now that you're dressed up as a medical professional, they'll let you inside. You must be wearing the doctor's gown every time you try to enter the HQ.

Go upstairs and kill a Mourner (level 13) while still wearing the doctor's gown. You'll get a key that will automatically be placed in your inventory. Use it on the gate to get inside, then search the crates to find Elena's distillator. Exit Mourner HQ and head back to the south-east corner of West Ardougne, where you originally crossed over. Kilron will help you get back over into East Ardougne. Alternatively, you can also head through the sewers, as they are no longer blocked. Go back to Elena and give her the distillator.

Delivering the Samples
(Be extremely careful in this section! Read each paragraph carefully, or you'll end up doing more walking than you have to.)

Elena will extract a sample of the plague, but the results of her test are strange. She wants you to take a plague sample to her mentor Guidor in Varrock to see what he makes of it. You will first need to stop by the chemist in the western-most building in Rimmington to get some more touch paper, however. She'll also give you some liquid honey, sulphuric broline, and ethenea, mentioning that the liquid honey is worthless, sulphuric broline is deadly poisonous, and ethenea is colourless. If you can't transport to Ardougne, it might be wise to deposit the vials in the bank and ask for new ones to get a second set. This way, if you mess up, you'll only need to go back to Rimmington, rather than all the way to East Ardougne. Another good way is to bank the sample and teleport to Falador, then take it out from the bank and walk the short way to the chemist.

From here on, be very careful. The plague sample is extremely fragile. If it breaks, you will need to have them replaced by returning to Elena. The following actions will break the sample: Teleporting (including teleport by Spirit Trees, by Skull sceptre, by Rimmington House Portal, by an Amulet of glory, and by cabbage-porting, excluding Fairy Ring teleporting) and engaging in combat. However, using and even failing the agility shortcut near Elena's house has no effect on them. You can put them in the bank for protection, but they must be in your inventory before talking to the chemist or Guidor. If you want doubles of the samples, then drop everything and talk to Elena again. Get more, and pick up everything that you dropped. This is if you want to have more chances without going back to Elena or so that you can keep a souvenir from the quest.

Your first stop is Rimmington. Once you get there with the vials intact, go to the chemist's house at the west side of town.

Talk to him with the items in your inventory, including the plague sample but do not mention the plague or he'll take them away, which will force you to go back to Elena. Just say you're a friend of Elena and you need some touch paper for Guidor.

You won't be able to get to Guidor in Varrock with the samples you're carrying, as the guards will confiscate them. You will have to smuggle them into the city. The chemist will suggest giving a vial to each of his three helpers, Chancy, Da Vinci, and Hops. They are right outside the house crowding around a fire. Give Chancy the liquid Honey, Da Vinci the ethanea , and give Hops the broline.

''NOTE: If by some chance you give them the wrong vials (as has been done by a fair number of players), you can correct the mistake without returning to Elena. You must first go to the Dancing Donkey Inn in Varrock without any extra vials in your inventory and speak to each of the assistants there. Then with the extra vials, you must go back to the chemist's house in Rimmington and correct whatever mistake was made. You can also just go back to Elena to get them replaced. ''

After giving the assistants the proper vials, go to Varrock. If you wish to teleport there, you must put the plague sample in the bank because it will break if you teleport anywhere!

Guidor The Plague Analyst
Retrieve both parts of the priest gown from the bank if you have them, or buy the robes from Thessalia's Fine Clothes in Varrock for 10 coins if you don't have them. After you have done that, go to the bank in Varrock and get the plague sample, and also make sure the touch paper is in your inventory, or you might have to do everything all over again! Next, go to the south-east part of Varrock. You will see a guard in front of a gate. Try to use the gate, the guard will search you, but won't find the sample. Click on the gate again, and he will say you can pass. Now, head to the Dancing Donkey Inn (a beer icon on the map) and talk to the chemist's assistants to get the vials back.

''NOTE: If you try to go to the Dancing Donkey Inn first, without the gown, do not panic. There is a clothing store next door that carries them.''

If you forget the touch paper, the sample or even the priest gown, in the bank and are already behind the gate with the three vials, leave the gated area.''' Do not teleport, or they will break. You can leave through the gate, but not re-enter'''! If you do not wish to deliver the three vials again(and do that whole section again), use the Telekinetic Grab spell, if you can'''. '''Get everything you forgot, from the bank as well as 3 air runes and 3 law runes. and drop the vials before entering the gated area! The guard will not find the plague sample, but will find the vials, and confiscate them. After you enter, use the spell on the three dropped vials, and prepare to meet Guidor.

Put on the priest gown and head to Guidor's house in the south-east corner of the gated area. Guidor's wife will let you through as long as you are wearing the robes. Make sure not to mistake Monk's Robes for a Priest gown!

Give Guidor the vials and sample, and he will analyse them thorughly, and come to a surprising conclusion. You will need to go back and talk to Elena who will tell you to go and talk to King Lathas. He is located on the second floor of the castle, just south of Elena's house. After talking to him the quest is completed.

Rewards



 * 3 Quest points
 * 1,250 Thieving-icon.png experience
 * Use of the Combat Training Camp
 * Ability to travel freely through the West Ardougne Gate

Music Unlocked

 * Honky Tonky Medieval

Required for Completing

 * Ardougne Diary Easy Tasks
 * Recipe for Disaster/Freeing the Lumbridge Sage
 * Underground Pass (quest)

Biohazard

Trivia

 * Rather than being dropped, the key that you get from killing a Mourner (level 13) automatically appears in your inventory. You can use recoil rings and do not need to do any damage.
 * Jerico, who helps you scale the walls of West Ardougne, a reference to the biblical story about the city Jericho whose walls were destroyed in the Battle of Jericho.
 * Da Vinci, one of the assistants, could be a reference to the famous multitalented Italian, Leonardo Da Vinci.
 * One thing that lends credence to the fact that the plague is fake is that an adventurer can talk to or fight any citizen of West Ardougne (without a gas mask), while not receiving any damage whatsoever from disease.
 * Even though it says that the tunnel has been closed, you can still leave via the tunnel, but you can't enter.
 * Guidor's wife, even when one is playing as a female, will still refer to one as "Father".
 * Even though the vials received from Elena disappear upon teleporting, after talking to the Chemist the player is able to teleport with the vials without them disappearing.
 * After completion of the quest, if you speak to the priest near the altar in West Ardougne, he still says, "I wish there was more I could do for these people," as if the city was still thought to be a plague site.
 * Upon completion of the quest your Adventurer's Log would read "Elena, daughter of Edmond in Ardougne, was kidnapped, but, following some smooth investigation into West Ardougne, I located and returned her to her father."