Creature of Fenkenstrain

Go upstairs by the eastern or western staircase and read from the bookcases in the western and eastern rooms:

"The Joy Of Grave Digging" in the west bookcase.

"Handy Maggot Avoidance Techniques" in the east bookcase.

Use the marble amulet on the obsidian amulet in your backpack to form the star amulet.

Equip your ghostspeak amulet.

Talk to the Gardener Ghost on the ground floor in the northern side.

Lead him south-east into the Haunted Woods. (Don't worry about him getting stuck he will teleport back to you)

Periodically talk to him for directions and dig at graves by choosing the "Dig" option until the decapitated head is found.

The grave is about 10 squares east and 5 squares south of the fairy ring. Choose the "Dig" option on the nearby grave.

Go to the tavern in Canifis.

Take a pickled brain off the table for 50 coins or by using Telekinetic Grab on it.

Telekinetic grabbing the brain completes a medium Morytania achievement, Brain Bending.

Use the decapitated head on the pickled brain.

Head east of Fenkenstrain's Castle to the tombstones just west of the Musician.

Use the star amulet on the easternmost memorial.

Push the memorial to enter Fenkenstrain's Dungeon.

Kill an experiment creature with a wolf's body and woman's head and pick up the cavern key.

Continue north-west and open the entrance.

Go up the ladder.

Go north and right-click dig on all 3 of the graves to obtain torso, arms and legs

Teleport back to Canifis and talk to Dr Fenkenstrain in his castle.

Talk to Dr Fenkenstrain again to turn in needle and thread.

Talk to the Gardener Ghost to receive the shed key.

Enter the shed next to Gardener Ghost, and search the cupboard for a garden brush.

Take 3 garden canes from the pile just outside.

Use the 3 garden canes on the brush for an extended brush, consuming 3 spools of bronze wire.

Go up the west stairs, and use the extended brush on the fireplace in the nearby room for a conductor mould.

At any furnace, make the conductor with a silver bar. In the smelting interface, look under the 'casting metals & glass' section. Under the 'silver casting' subsection of that section, there will be an option to make a conductor.

Be sure to make only one, as the furnace will try to use multiple bars.

Go back to the castle and go up either staircase.

Go up the ladder in the southern room.

Repair the lightning conductor.

Talk to Dr Fenkenstrain.

Go upstairs and use the ladder in the central northern room.

Talk to Fenkenstrain's Monster.

Pickpocket Dr Fenkenstrain.

Quest complete!