Star Trek: Hidden Frontier

S06E05 Vigil

Title: Vigil Plot: In an effort to grasp the workings of the tetrahedrons, officers interrogate Mason, a pirate affiliated with the Orion Syndicate. During the questioning, he discloses the whereabouts of another key to the tetrahedron, prompting a retrieval mission with his cooperation. However, the operation takes a tragic turn when one officer fails to return, leaving the team devastated by the loss. Meanwhile, Shelby faces her own past while aiding a Romulan fleet in navigating the treacherous Patch, leading her to an unexpected reunion with her ex-lover, Captain Mackenzie Calhoun.