Missing, Presumed Death

Missing, Presumed Death is a quest scheduled for release in October 2013 that features Death, who has gone missing, and the Menaphite god of the dead Icthlarin, who is attempting to take over his role until he is found. The quest starts in Silvarea, west of Paterdomus, where some monks have been murdered, their souls unable to pass on due to Death's disappearance.

It also involves the Mahjarrat Sliske, reveals how he obtained the Staff of Armadyl from the Dragonkin prior to the assassination of Guthix, and also answers the question of whether he has become a god.

Murders in Silvarea
To start the quest, speak to Brother Samwell in the mountain pass of Silvarea, located west of Paterdomus and east of Varrock.

Investigate the monks and trees to find all the clues. (sorry, I dont know how to make a good guide, but i will write the rewards.)

After the quest is complete, you can return to the citadel and claim a barrows amulet that banishes 30 barrows brothers, You use it on a chest and you dont have to kill the brother it is used on. 50k xp in thieving and constitution, 30k xp in a skill of your choice, new death animations.

Trivia

 * The quest's title is a pun on the classification "missing, presumed dead" used for people who have been missing and are most likely to have died.