When movie stars come to TV, it can be a very good thing. Think Woody Harrelson and Matthew McConaughey in True Detective, or Glenn Close in Damages. Or it can be really bad. See: Christian Slater in just about anything.
How Halle Berry will fare in CBS’ Extant is up in the air, but this new extended trailer looks very promising. Berry plays an astronaut who returns from a solo mission with an unexpected passenger. Extant premieres on July 9th.