Warning: SPOILERS for Star Trek: Picard Season 3, Episode 9 – "Vox"The Borg origin and destiny of Jack Crusher (Ed Speleers) have been revealed in Star Trek: Picard season 3, episode 9, "Vox." Counselor Deanna Troi's (Marina Sirtis) Betazoid powers unlocked what was behind the red door in Jack's mind: a terrifying Borg Cube. As Troi immediately feared, it confirms that the Borg are innately part of Jack since his birth, thanks to his father, Admiral Jean-Luc Picard (Patrick Stewart). In fact, Jack Crusher is Vox of Borg.
Jack Crusher, what was happening to him, and why Vadic (Amanda Plummer) and the Changelings wanted to capture him, was one of Star Trek: Picard season 3's biggest mysteries. Jack's waking nightmares, the mysterious voice in his head, and his glowing red eyes led some fans to speculate Crusher was linked to Star Trek: Deep Space Nine's Pah-wraiths. But the truth is intimately tied to Jack's father, Jean-Luc Picard, who was assimilated and turned into Locutus of Borg in Star Trek: The Next Generation. As Picard lamented to Jack's mother, Dr. Beverly Crusher, "He inherited the best of you and the worst of me."