It helps to have the Wolfbane Dagger with you to prevent getting killed by werewolves by accidentally attacking the Canifis citizens. It also helps if you have completed Desert Treasure so you can use the Kharyrll Teleport directly to Canifis. Having the fairy rings available is also useful and is a quick way to travel to Canfis.
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 asked to describe yourself in one word, answer "braindead" and that your best skill is gravedigging.
Note that you do not have to find the 5 body parts in any particular order.
Dr. Fenkenstrain hires you and you will receive a mission to retrieve 5 body parts:
Wear your Amulet of ghostspeak and talk to the headless Gardener Ghost. His name is Ed Lestwit and that is the grave you are looking for. He can be found north of the room with the "torture table" in it. He tells you that his head was chopped off and he was 'murdered' by decapitation. Offer to help find his head, which is buried in a grave in the Haunted Woods, and he will follow you for 10 minutes, so take him south into the Haunted Woods. Ask him for the way if you are lost.
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. The grave is a little south-east of fairy ring ALQ. If you go too south the gardener will go back to the castle. If you log out at that point he will stop following you and go back to the castle.
Go to the bar in Canifis. You can either ask the bartender Roavar for something to eat and he will sell you a pickled brain for 50 coins, or tele-grab a brain (and complete the Brain Bending Morytania Task in the process.) Use the brain on the decapitated head.
A grave opens a dungeon!Slaying a dog-woman-thing.
Upstairs in Fenkenstrain's Castle, there are bookcases on either side of the floor. Search the bookcase in the west room for The Joy of Gravedigging and you will find a marble amulet. Search the east room's bookcase for Handy Maggot Avoidance Techniques and you will find the obsidian amulet. Use them with each other to get a star amulet.
Exit the castle and head south-east, to some tombstones near a musician. Use the star amulet on the eastern-most tombstone with the indent on it. Push the tombstone to enter a dungeon which contains various Experiments. Kill one of the level 50s to get a Cavern key - the ones that look like a dog with a female head, as the others don't drop the key.
Once you have the key, follow a tunnel in the north-west part of the cavern to a gate and unlock it. Go up the ladder, and dig at the three tombstones and you unearth all of the remaining parts. To get back to the castle, enter the fourth tombstone and you will be back in the cave. You need to then get another cavern key by searching the chest at the bottom of the ladder, to then go back to the castle.
Hand over the body parts to Fenkenstrain and he will ask you for a needle (obtainable from the general store in Canifis) and five spools of thread to sew the body together. Give them to him to receive yet another assignment - fixing the lightning rod - as Fenkenstrain notes that having a complete body is not all that's needed to bring the body back to life, and that he needs lightning to complete his plan.Ready for a little juice...
Ask the Gardener Ghost for the shed key. Go inside the shed and search the Using the extended garden cane to obtain a conductor mould.cupboard for a Garden brush. Outside the shed there will be a pile of canes. Take three Garden canes. Use them on the brush and attach them with your 3 spools of bronze wire. (Requires 20 Crafting). This will extend it, making it suitable for chimney sweeping. Make sure you use all three canes on the same brush, it requires multiple canes to extend the brush. The icon of the brush will not change, but the examine text will.
Go upstairs and use it on the west fireplace (in the room where the marble amulet was) 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 need to have completed Ghosts Ahoy to access it for free, otherwise, you need to pay 2 Ecto-tokens to enter the city.
If you have access to the Fairy Rings, you can use Fairy Ring ALQ in the Haunted Woods to teleport to Zanaris, and use the furnace there.
If you have done In Aid of the Myreque, it is also possible to use the Burgh de Rott furnace.Invoking the conductor with lightning.
If you have any one of the Varrock armours, you can teleport to Edgeville and use the furnace there, and then teleport back to Canifis.
Another quick option is to use the furnace in Lumbridge, or the one in Falador.
Some people choose to teleport to Lumbridge, make their conductor, teleport to their house and scout a house which has a teleport portal to Canifis. This provides a quick route to the castle.
One of the quickest ways is to teleport to Burthorpe, make the conductor, then start the "Mazchna For A Task" which allows a free teleport to Mazchna in Canifis, then select the "I'm Finished" button.
Others can also go find and charter a boat to Port Phasmayts for 1,300 GP instead of the 2 ecto tokens.
Use a silver bar and the conductor mould on a furnace and select the Lightning rod option to make a Conductor.
Go back to Fenkenstrain's Castle, take the stairs up to the first floor, go to the room furthest south and climb the ladder to the roof. Click on the lightning conductor to fix it. Lightning will instantly strike and the monster comes to life!
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. Take the stairs up again and enter the room in the center. Climb the ladder.
When you attempt to kill the creature, you realise it's not as dangerous as Fenkenstrain claims. The monster will introduce himself as Lord Rologarth, the owner of the castle, of which Fenkenstrain was the doctor. Rologarth shamefully tells you about how Fenkenstrain tricked him into selling all of his subjects and himself to the vampyres, and wants you to stop Fenkenstrain's evil plan. You now need to pickpocket Dr. Fenkenstrain to steal his Ring of Charos and complete the quest. (Requires 25 Thieving)
One of the books on the bookshelf is titled "Men are from Morytania, Women are from Lumbridge", a play on the title "Men are from Mars, Women are from Venus". On the same bookshelf, there is a book called "My family and other Zombies" which is a play on the book "My family and other animals" by Gerald Durrell.
If you wind the clock in the south west tower room you will find a Letter explaining the history of the castle.
Upon completing this quest one's Adventurer's Log will read: "It was a dark errand indeed, but the corpse has been reanimated and I've 'persuaded' Fenkenstrain to part with the Ring of Charos!"
On the first floor, where the bookcases are found, there are two corpses near the tower ladder. By examining the left corpse, it will say "How do you make a skeleton laugh?", and if you examine the right corpse, it will say in response to the other examine text: "Tickle his funny bone."
Experiments were a popular choice for training pures before the EOC was released. This was due to the experiments rather high hp levels.
Among the selection of books in the bookcase where you get the Marble Amulet, there is a book called 1001 Ways To Eat Fried Gizzards. This may be a reference to the book 101 Ways To Eat Fried Worms.