Originally, Adiel had kept an eye on the party's quest for the Tome of Legends even before joining the group. He has a great interest in magical items and believed that this book held great importance in upcoming events involving the Triplefang clan.
He met up with Holly, Sunna, Glumr, and Farden at the end of Chapter 8, just as they returned by a salvaged boat from the Haunted Tower of Sowell.
http://triplefang.yoyo-pete.co...cter.tower.of.sowell
They were pulled a great haul of treasure out of the tower, including many magic items. The group was hesitant to fully welcome this newcomer who had showed up just now that there was treasure, but he quickly proved himself to be extremely helpful in identifying several magic items, assessing the values of the magic items as well as more mundane item, and helping the party find buyers. When all was said and done our heroes had enough gold and silver coin to buy The Tome of Legends from Proctor Lemon.
Farden unexpectedly took his share of the loot and left the party. Always practical and grounded, Farden had more interest in being wealthy than being a legend. Without Farden, the group lacked martial punch, so they asked Mord (who had be fighting goblins with Tora's warband on the southern border) to rejoin them.