This guide is suitable for current RuneScape and Old School.
To start, go to the southern side of Mort'ton (head south through Mort Myre Swamp), and locate a ruined building with a shelf and a broken table in it. Search the table and you will find some herbs (two tarromin) and then search the shelf to find a book.
Search the book and then use some ashes with the water filled vials, and then use the tarromins with them. You should have 2 Serum 207 (3) potions.
Walk to the north of the town, and enter the general store. Use some Serum 207 on the owner, Razmire. He will explain briefly what has happened, and will ask you to kill 5 shades. Exit the building and attack 5 Loar Shadows.
They will turn into shades, and retaliate. Once you have killed all 5 shades, and collected their remains, return to Razmire and use another dose of Serum 207 on him. Tell him you have killed the shades. He will ask you to talk to Ulsquire about it.
Go into the building to the east, the one with the sink, and use another dose of Serum 207 on Ulsquire. You should now have used a whole potion. Talk to Ulsquire and he will thank you for what you have done. He will take 2 Loar Remains from you.
Return to Razmire, and use a dose of Serum 207 on him. Access the general store, and buy 1 hammer and 1 olive oil. Then go to the Building store, and buy around 5 wooden beams, 5 Limestone bricks, and 25 swamp paste.
For this next stage, it is best to be on World 88, the Shades of Mort'ton world. Walk north-east, and travel across the bridge onto the island. You will see the ruins of a temple there. Walk over, and start to repair it. You will firstly deposit your resources there, then start using them to build. Once the temple is 100% rebuilt, and your sanctity is above 23%, then light the flame altar. Use the Olive oil with the flame to get Sacred Oil (3). Then use the Serum 207 on the flame to get Serum 208.
Walk back to the General store, and use the Serum 208 on Razmire. It is permanent. He will pay you some money as a thank you. He will tell you to return to Ulsquire. Walk over to Ulsquire and use the last dose of Serum 208 on him. He will thank you also, and pay you. He will tell you to release the soul of a shade.
Use your Sacred oil on the logs. You will receive Pyre logs. Place these on one of the many pyres dotted around the edges of the town. Then place some Loar remains on the Pyre logs. Once done, light the fire and the spirit will be released. Return to Ulsquire for your reward.
Congratulations! Quest Complete!
Guide Made by: Deathslayer
Corrections submitted by: DaDa, Jei, Dark, Max, Majinvegito3, Power of Five