Seekers of the fox

"Rule number one: Never mess with magic. Even so, a life-or-death situation calls for Callan and his criminal friends to make a deal with the Eye--the sinister, sentient artifact they stole from a sorcerer. It's Lachlan's life in exchange for a future task, and the gang has no choice but to agree. But even as Lachlan is resurrected, it's not without cost. Through the Eye, Callan can see a tiny purple stain inside Lachlan's soul, which will eventually consume him. The cure--and their part of the deal--lies with the Dragon's Teeth, a pair of swords with extraordinary powers, and the search for them leads the thieves on a quest that will unravel the mystery of the Eye. Old friends, new betrayals, and an even more daring break-in than the last culminate in a confrontation that will take all the gang's skill and power to resist--or they'll die trying"--Publisher.