#9 Joined by Wilf the elven scout, the party penetrates the Well of Demons, kills the gnoll leader Maldrick Scarmaker, and takes his silver teleport key. Rescue last two Fallcrest captives from Maldrick's interrupted ritual to rededicate the Well from Baphomet to Yeenoghu.
#10 Party returns to the Seven Pillared Hall for overnight rest at the Inn while Steven & Andraste escort the captives back to Fallcrest. Meet Rakara, a red dragonborn & junior mage of Saruun, on his own quest to deal with the renegade Paldomar.
Group uses the silver key a teleport circle to enter the Tower of Mysteries, passing the challenge of the Aspect of Vecna. Messoria communes with her mother(?) and is blessed by Sehanine.
In a terrible battle at the Temple of Vecna within the Tower of Mysteries, Hengist the Warlord is slain by Paldomar, but the renegade mage's Bronze Warder and his army of carnage demons and norkers fall, until he alone remains. Failing to kill Messoria, Paldomar's nerve cracks and he flees via the teleporter, leaving Rakara Messoria Wilf & Aelar battered but living, and victorious. They destroy the Vecnite temple, ending Paldomar's plan to siphon the draconic energies of Tiamat into control of Saruun's Bronze Warders.
Then they return home.