Instruction manual
This is the quick guide for Biohazard.
For a more in-depth version, click here.
Biohazard (#38)
Members only? Yes
Release date 23 October 2002 (Update)
Quest series Elf
Official difficulty Novice
Developer Tom W
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Biohazard continues the storyline after the Plague City quest. The plot deepens as Elena finally gets a chance to process her plague samples. Buried under these samples lies a well-hidden secret.

Details Edit

Start point Quest Talk to Elena in her house in East Ardougne. She lives right across the road from where you started Plague City.
Official difficulty Novice
Description This is the second part of an ongoing adventure. Help Elena discover the truth about the infamous Ardougne plague.

Smuggle test samples across Ardougne to Elena's old mentor.

Length Long


Items required


Skills Necklace (4/6)

Enemies to defeat Mourner (level 13)
Elena location

Elena's Location

Omart location

Omart's location.

Jerico location

Jerico's location.

Walkthrough Edit

Getting started Edit

Sneaking back Edit

Items required: Pigeon cage, bird feed

  • Speak to Jerico in the house south of the northern Ardougne bank. (1)
  • Search cupboard for bird feed.
  • Grab a pigeon cage from the backyard.
  • Speak to Omart. (Outside the south-east corner of West Ardougne)
  • Go to small watchtower along the wall, in front of the gates to West Ardougne.
  • Stand in the corner where the two spiked fences meet.
Releasing the Pigeons

Creating a distraction.

  • Use bird feed on the watchtower fence.
  • Click the pigeon cage in your inventory.
  • Run south from the watchtower and speak to Omart. (1 after a slight delay). You will be in West Ardougne now.

Infiltrating the Mourner Headquarters Edit

Items required: Rotten apple (must be apple in quest, others from Yanille or Seers' Village do not work) Recommended: Skills necklace(6) (teleport to Fishing Guild) OR Ardougne teleport to quickly return to Elena.
Mourner Tunnels

Mourner HQ is due north-east of West Ardougne.

  • Attempt to enter the Mourner HQ
  • Head around the Headquarters to the northern area with the cauldron.
  • Pick up rotten apple. NE ardougne
  • Squeeze through the fence into the backyard.
  • Use the rotten apple on the cauldron. DO NOT EAT IT!
  • Go back through the fence.
Nurse Sarah location

Nurse Sarah's house.

A key will automatically be placed in your inventory.

Getting the touch paper Edit

Items required: Falador Teleport or amulet of glory (optional)

  • Bank the 4 samples Elena gives you. Teleporting with samples will break them, so make sure you bank them before you teleport!
  • Teleport to Draynor Village/Falador.
  • Withdraw the samples!
Chemist location

The chemist's location.

  • Go to the Chemist in south-western Rimmington. (Using the Rimmington Home Teleport will destroy the plague sample!)
  • Speak to the Chemist. Avoid all chat options that state you have a plague sample! (2-2-2)

He will give you the touch paper.

Foresight Edit

Items required: Liquid honey, etheneasulphuric broline, and the plague sample.

So far, so good Edit

Items required: 10 Coins or a priest gown top and bottom, the plague sample and touch paper.

  • Deposit Plague sample (Bank Deposit box at the northern parts of the docks in Port Sarim by the Monks of Entrana).
  • Teleport to Varrock. (or Cooking Guild)
  • Purchase a Priest gown (top and bottom) from Thessalia at Thessalia's Fine Clothes in Varrock
  • Withdraw the Plague sample from the Varrock east bank.
  • Equip the Priest gown
  • Travel to the fenced area to the south-east of the bank (south-eastern Varrock). The guard will search you, but you will be able to pass freely with the plague sample and touch paper in your inventory.
  • Go to the Dancing Donkey Inn.
  • Talk to Hops, Da Vinci and Chancy to get the vials back. Make sure you have the free inventory space.
  • DO NOT pass back through the gate or your vials will be confiscated but note your plague sample will not be!
  • If you must pass through the gate to retrieve the plague sample or papers, you can drop the vials outside the gate and telegrab them

Secrets Edit

Items required: The plague sample, touch paper, a priest gown, and an Ardougne teleport (51+ Magic suggested).

Congratulations! Quest complete!

Rewards Edit

Biohazard reward scroll

Trivia Edit

Required for completing Edit

Completion of Biohazard is required for the following: