There's finally a new Star Trek: Picard novel to dig into, ending the long hiatus since Una McCormack's ‘Second Self’. It comes off after a highly regarded final season for Picard and adds a fourth entry into its universe-expanding novels. The highly anticipated Star Trek: Picard 'Firewall' by David Mack is available now. And it puts fan-favorite Seven of Nine and her Starfleet past at the heart of its story.