Piracy and Sorcery — James Turbett

Set in the World of Schemes and Sorcery. Stan Hreston is the captain of a pirate ship, the Knavish Barracuda. After he and his crew plunder a merchant vessel, they discover a stowaway onboard who harbors a dark secret. Now, Hreston and his crew must contend with an enemy more formidable than defenseless merchant ships, and with fey sorcery working against them, the captain must act fast.