Creature of Fenkenstrain

Official quest description: Dr Fenkenstrain, master and sole occupant of the castle to the north east of Canifis, needs a new servant to go on a dark errand for him.
Do you have the stomach to help Fenkenstrain complete his twisted purpose?
Release date: 31 January 2005
Start: Read the sign in the middle of Canifis.
Difficulty: *****
Length: Medium
Members only: Yes
Requirements:
Priest in Peril
Started Restless Ghost
Level 20 Crafting
Level 25 Thieving
Able to defeat a level 51 monster and run past level 72 monsters.
Items needed:
An amulet of ghostspeak
A spade
About 50gp, or telekinetic grab
A silver bar
3 spools of bronze wire
A needle
5 spools of thread
If Ghosts Ahoy has not been completed, it is highly recommended to bring 2 Ectotokens or a bucket (that can be filled with ectoplasm) a pot, and some bones in order to earn them.
Some food when you are going into haunted woods or few Prayer potion to protect yourself from annoying Vampire
Monsters to kill: Level 51 Experiment
(Warning, you don't need to finish this quest if you want to go into this dungeon. If you finished this quest you can't kill the level 51 Experiment anymore.)
Spoiler warning: Plot and/or ending details follow.
edit Walkthrough
To start the quest, read the signpost in the center of Canifis. After you've started the quest, go northeast to Fenkenstrain's Castle. Talk to Dr. Fenkenstrain and a job interview will commence. When you describe yourself in one word, answer "braindead" and tell him that your best skill is gravedigging. You will receive a mission to retrieve 5 body parts. You will need a:
Decapitated head
Pickled brain
Torso
Arms
Legs
Head

Wear your Amulet of ghostspeak and talk to the headless Gardener Ghost. He can be found north of the room with the "torture table" in it. Ask him about his head and his name. He tells you his head was chopped off! Offer to help find his head, which is in a grave in the Haunted Woods. He will follow you for 10 minutes, so take him south into the Haunted Woods. Ask him for the way if you are lost. Move quickly, and be wary of the numerous vampires. Follow the Gardener Ghost's directions closely and you should reach his grave soon enough. Make sure the grave's name matches the ghost's, dig, and you will get the head.
Note: You will find that the holy symbol comes in handy here.
Brain
Go to the bar in Canifis. Talk to the bartender or try to pick up the pickled brains on the table and buy a pickled brain for 50 coins. Use it on the empty head. You can also use telekinetic grab on the brain that is on the table near the counter. Note: It is actually cheaper to buy the brain than to tele-grab it as a law rune costs much more than 50 coins.
Arms, legs and torso

Upstairs in Fenkenstrain's Castle, there are bookcases in each west and east room. Search the west bookcase for The Joy of Grave Digging and you will find a marble amulet. Search the east bookcase for Handy Maggot Avoidance Techniques and an obsidian amulet. Use them on each other to get a star amulet.
East of the castle near a water source are some tombstones. Use the star amulet on the furthest one with the indent on it, then push it to enter a dungeon that contains level 25 and 51 Experiments. Kill one of the level 51s to get a Cavern key. Food may be necessary for lower levels, as the level 51s can hit up to 7. Once you have the key, find a door in the Northwest and open it. Go up the ladder, and dig at the three tombstones and you get all the remaining parts. Alternatively, one may search the chest just past the gate in the passage for the key.
LightningAfter using the brain with the head, give the body parts to Fenkenstrain. He will ask you for a needle and five spools of thread to sew the body together. Give them to him to receive yet another assignment. Fenkenstrain notes having a complete body, but with no life within it.

Ready for a little juice...
You now need to fix the lightning rod so that the castle will get struck by lightning, bringing the monster to life. Ask the Gardener Ghost for the shed key. Go inside the shed, open the cupboard, search the cupboard, and then take the Garden brush. Outside the shed there will be a pile. Take three Garden canes. Use them on the brush and attach them with bronze wire. This requires level 20 Crafting. This will extend it, making it suitable for chimney sweeping. Go upstairs and use it on the west fireplace to get a conductor mould.
Once you have the mould, you need to go to a furnace. The nearest one is in Port Phasmatys, But you will need to present 2 Ectotokens, or, if you have done Ghosts Ahoy, you can teleport via Ectophial, or walk there, and enter for free. Ectotokens can be obtained by going to the Ectofuntus, across from the energy barrier, with a bucket, go down the trapdoor you see in the building and collect a bucket of Ectoplasm, you also need a Pot, to collect your grinded bones, put any type of bones in the loader upstairs and collect the grinded bones with your Pot, do all that and put it into the fountain, do that until you have 2 Ectotokens, but a teleport to Falador or Lumbridge then Varrock will work too. Use a silver bar and the conductor mould on a furnace to make a Conductor. (Attempting to superheat the silver and the mold will not work. A furnace is needed.)
Go to Fenkenstrain's Castle and climb upstairs. Go to the room furthest south and climb to the roof. Use the lightning rod on the conductor to fix it. Lightning will instantly strike and the monster comes to life!
Lord Rologarth
Talk to Dr. Fenkenstrain again. He will tell you that the monster tried to kill him, so he locked it in the tower. He will give you the tower key and tell you to kill the monster. The tower is located in the middle of the second floor.

When you attempt do so, the monster will introduce himself as Lord Rologarth. He will tell you the true story of how Fenkenstrain tricked him into selling all of his subjects and himself to the vampires. You need a thieving level of 25 to pickpocket Dr. Fenkenstrain to steal his Ring of Charos and complete the quest.