Story So Far - with leads at the end

Since the campaign has taken us almost into the Paragon tier, I thought it would be good to give a paragraph or two recap of the whole thing with all the leads/plot threads at the end to think about for our next few sessions.

Beginning in Stonehallow, you were sent to Kol Fen by Kor Yeznia to acquire several bodies for a ritual - here you faced undead and uncovered the first piece of the Staff of Chaos - an ornamental skull. Additionally, their exploration located a large meteor like object that emanated negative energy when near the skull.  Directed to Fellstar the Temple of Pelor - Uthor informed them of the Staff and that the other pieces were last known in the possession of Urgog the Mighty in the Goblin Hole.  After destroying the goblins, they acquired a staff piece and a letter that referenced to bring the Staff of Akmun Sur to Vestapalk.  Returned to Uthor - told them perhaps the last piece could be found in the writings of Rogvir Glimmershield.  Traveled to Timbervale then into the Stonefang Pass to locate the writings - fought orc tribes.  Writings indicated last piece buried with Lord Evard the Black.  Headed back to Uthor in Fellstar - stopped some slavers taking captives to the Borderkeep.  While at Uthor's a letter from Kor Yeznia sent them to Hampstead.  Covered in bone dust and under a curse - located Temple of St. Lucian - arcane portal in hidden shrine to Carceri.  At Darien's farmhouse, found a ghoul franticly writing "Asmodeus Walks" - Kor Yeznia turned ghoul - letter indicting Kaius Danitus - councilman of Stonehallow - as evil.  Also a map with several locations (Stonehallow, Sarthel and Banethal) with a circle connecting all of them with the word "Iron" written near the circle.  Letter also referenced bringing a Balance card to Valthrun the Prescient at Winterhaven.

Traveled to Winterhaven - Valthrun sent them to Lord Padraig - quest to investigate the abbey - fought the orcs, found the Eladrin, located Berrian's sister and their father's fate.  Located cards from the Deck.  Learned about the fall of the Abbey.  Located Winterbore Codex - brought to Valthrun - talked about Carceric Plane and Therizdun.  Met Sir Oakley - cleansing ritual.  Located Drow pursuing stolen children - located the pieces of the cleansing ritual - found strange liquid of unknown origins in the catacombs - killed Dragon in the vaults - located letter that mentioned Vestapalk and K.D....

Outstanding plot points of interest
1) Locate the final piece of the staff - buried with Lord Evard or in Triton Keep, which is overtaken by giants
2) Complete the cleansing ritual
3) Acquire the last piecs of the Deck - currently have 11 cards
4) Berrian and kin are guarding the Watchtower from the Orcs - Padraig suggested killing the Orc chieftain
5) Strange liquid in the catacombs
6) Valthrun the Prescient has the Winterbore Codex with references to the Carceri Plane
7) Portal in the Tomb of St. Lucian beneath Hampstead
8) Letter from Kor Yeznia and other links to Kaius Danitus
9) Children being kidnapped
10) slavers active near Borderkeep