Taking runes for a Falador teleport, go to the Temple on the west bank of the River Salve, at the door you will meet a monk. Speak to him to start the quest. He will ask you to make him a new kind weapon. Teleport to Falador and take your bowstring and mithril two-handed sword, as well as runes to teleport to Varrock and your Glory Amulet, and go to Doric's forge. Use the two-handed sword with the wetstone and then use the bowstring with it, you'll get a mithril bowsword. Teleport to Varrock and return to the monk. After giving him the bowsword, he will request that you take a special artifact that he gives you to Entrana and put it on the altar there.

The artifact is very fragile and you need to place it in a large rune essence pouch. You cannot take the artifact to Entrana by ship, so use your Glory Amulet to teleport to Edgeville and go through the Abyss using the Law Altar Rift to enter Entrana. Take runes to teleport to Varrock as well. Place the artifact with your large essence pouch on the Entrana altar, and watch.

A powerful relic is stolen! The monk who sent you upon this quest is no follower of Saradomin! You must search out the thief, teleport to Varrock and take out runes for two more Falador teleports before going back to the Temple to confront the monk. Alas, the 'monk' has been slain! Teleport to Falador and return to Entrana and speak with the High Priest. He will send you to speak to Sir Tiffy (the chap who's sitting on a bench in the Falador Gardens).