WARNING: The following article contains spoilers for the Star Trek: Discovery Season 2 episode "New Eden," streaming now on CBS All Access.

Michael Burnham's uncomfortable reunion with Spock was delayed in Star Trek: Discovery's Season 2 premiere by the news that her estranged foster brother had taken leave from Enterprise, a decision somehow connected to the appearance across the galaxy of seven mysterious red signals. Unsurprisingly, however, there's more to his absence than that.

As Burnham (Sonequa Martin-Green) discovers when she visits his quarters aboard Enterprise, Spock had become haunted again by a nightmare he thought he'd left behind in childhood, and believed the search for its meaning could very well lead to his death. The tablet he's used as a boy -- the same one shown in flashbacks in the Season 2 premiere -- contains a sketch of the seven signals, and their locations, two months before Starfleet became aware of them.

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Clearly, the distraught Spock possesses information pertinent to Discovery's investigation of the mystery that fuels the Season 2 plot, and, therefore, should be contacted. But, as this is only the second episode, it's not that simple.

Star Trek: Discovery

Captain Christopher Pike (Anson Mount), who previously told Burnham that he felt "something shift" in Spock, "as if he'd run into a question that he couldn't answer," somewhat-reluctantly reveals where Spock went after he left Enterprise.

"I know where Spock is, Burnham," he says. "Your brother is in a psychiatric unit on Starbase 5, since about a week after he took leave, committed to the facility at his own request."

Although Spock was emphatic that his family not be informed of his location, Pike determines, "his association with these signals outweighs his desire for absolute privacy." "You ... could extend an olive branch to your brother," he suggests to Burnham, "but he'd need to decide whether or not to take it."

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That's a significant question, as something happened between Spock and Burnham that's resulted in them not speaking in years. Likewise, he's had no communication with his father Sarek (James Frain), which should come as no surprise to fans of the original Star Trek series.

However, Burnham is destined to reach out to Spock, and not only because we've seen the promos for Discovery's second season, with Ethan Peck in the iconic role: After an initial reluctance, Burnham admits to Pike that she saw the so-called "red angel" when she was injured on the asteroid in the season premiere. She and Spock are both, somehow, connected to these signals, and they may be the only ones who can solve their mystery.

Streaming on CBS All Access, Star Trek: Discovery Season 2 stars Sonequa Martin-Green as Commander Michael Burnham, Doug Jones as Commander Saru, Anthony Rapp as Lt. Commander Paul Stamets, Mary Wiseman as Ensign Sylvia Tilly, Shazad Latif as Ash Tyler, Wilson Crz as Dr. Hugh Culber, Anson Mount as Captain Christopher Pike, Mary Chieffo as L'Rell, Tig Notaro as Chief Engineer Reno, Ethan Peck as Spock, Rebecca Romijn as Number One and Michelle Yeoh as Philippa Georgiou. New episodes premiere Thursdays at 8:30 p.m. ET/5:30 p.m. PT.