The Restless Ghost/Quick guide

Getting started

 * Talk to Father Aereck in the Lumbridge church.
 * Go through the graveyard's Southern exit and follow the shore to a mining site. Head west to a hut in the swamp.

Ghostspeak Amulet

 * Talk to Father Urhney inside the hut.
 * Head to the Lumbridge graveyard south of the church
 * Equip the Ghostspeak amulet and talk to the ghost.

The Skull

 * Head to the Wizards' Tower, and climb down the ladder to the basement.
 * Search the altar, and you will receive a skull. Kill the skeleton OR run away.
 * Go back to the graveyard and use the skull on the coffin.
 * Quest completed!