Kayshon, His Eyes Open.
After a prominent member of the Collector's guild dies, the Cerritos is tasked with preparing his collection to be catalogued. The ship's new chief of security, Kayshon, joins the away team with Mariner, Tendi, Rutherford, and Jet Manhaver, an ensign who takes over Boimler's position and makes Mariner feel threatened. Meanwhile, on the Titan, Boimler helps an away team survive a dangerous mission but is accidentally cloned when he is being transported back to the ship. Unknown to Starfleet, Collector Siggi steals a rare mask from the collection which triggers the dead collector's automated ship to attack the away team...