Saru returns to help the U.S.S. Discovery uncover the mystery of an unusually destructive new force. As Burnham leads the crew, she must also find a way to help Book cope with an unimaginable loss.

Annabelle Wallis, Chelah Horsdal, Emily Coutts, Ian Alexander, Oded Fehr, Oyin Oladejo, Patrick Kwok-Choon, Ronnie Rowe Jr., Sara Mitich, Tara Rosling