There are 4 books in the Tales of the Ketty Jay series. The newest book is The Ace of Skulls which came out in 2013.

1
Retribution Falls

Book cover of Retribution Falls
Frey is the captain of the Ketty Jay, leader of a small and highly dysfunctional band of layabouts. An inveterate womaniser and rogue, he and his gang make a living on the wrong side of the law, avoiding the heavily armed flying frigates of the Coalition Navy. With their trio…
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2
The Black Lung Captain

Book cover of The Black Lung Captain
Chris Wooding, author of the thrilling novel Retribution Falls, returns to a fantastical world of spectacular sky battles and high-flying heroics for another epic adventure.
 
Deep in the heart of the Kurg rainforest lies a long-forgotten wreck. On board, behind a magically protected door, an elusive treasure awaits. Good thing…

3
The Iron Jackal

Book cover of The Iron Jackal
Things are finally looking good for Captain Frey and his crew. The Ketty Jay has been fixed up good as new. They've got their first taste of fortune and fame. And, just for once, nobody is trying to kill them. Even Trinica Dracken, Frey's ex-fiancee and long-time nemesis, has given…

4
The Ace of Skulls

Book cover of The Ace of Skulls
All good things come to an end. And this is it: the last stand of the Ketty Jay and her intrepid crew. They've been shot down, set up, double-crossed and ripped off. They've stolen priceless treasures, destroyed a ten-thousand-year-old Azryx city and sort-of-accidentally blew up the son of the Archduke.…