Star Trek: Discovery S02E07: Lights and Shadows by Marta Cunningham from IMDb

Burnham goes to Vulcan in search of Spock, where she unearths surprising family secrets. In researching what is left of the Red Angel’s signal over Kaminar, Pike and Tyler end up in battle with time itself. Georgiou has a few tricks up her sleeve for Leland and Section 31.

Watched on Netflix.
Poster by J.J. Lendl
Star Trek: Discovery S02E05: Saints of Imperfection by David Barrett from IMDb

Burnham and the crew navigate a dangerous alien landscape in a race against time to save Tilly’s life, but Stamets is not at all prepared for what they find in the process. Section 31 is assigned to help track down Spock, much to Pike’s dismay.