Thief's Luck — Deborah Millitello

When seventeen-year-old Farlee cuts the wrong purse during the Spring Festival in Southport, his adoptive family is murdered. He and Dabreze, the girl he loves, have to flee for their lives to the escape the Shadow Guild, an organization of thieves and assassins. Somehow he has crossed the Guild, and anyone who does, dies. Aided by a traveling minstrel and a troupe of entertainers, Farlee discovers he's stumbled into a conspiracy to kill the beloved king of Kardayen and begin a war with the elves, a conspiracy led by the Shadow Guild in league with a member of the royal family. Farlee is the only one who can stop the assassination, and he has only seven days to do it!