Star Trek: Discovery

CBS | 10:00 pm

After the crew of the Discovery is unable to save another Federation ship from destruction by a Klingon vessel that is using cloaking technology, Burnham, Tyler and Saru (Sonequa Martin-Green, Shazad Latif, Doug Jones) go searching for a solution in the new episode "Si Vis Pacem, Para Bellum," which means "if you want peace, prepare for war." The trio are looking for a natural crystalline transmitter they hope can be used as a kind of sonar to detect the hidden enemy ships. Jason Isaacs also stars.