Buck's 9-1-1 Origin, Kevin James Is Crew Chief and More

Series premiere (all 10 episodes): A NASCAR crew chief (King of Queens‘ Kevin James) butts heads with the team’s new boss; Freddie Stroma (Bridgerton) co-stars. (Read preview; watch trailer.)

Series finale: Krei enlists Big Hero 6 to help with his new karaoke machine; Hiro sees an opportunity to defeat the mascots.

Spencer and his teammates rally around Chris to help him with his trauma; Laura fears the worst when she begins to notice a change in Olivia’s behavior.

With hometowns on the horizon, Matt is forced to make some difficult decisions; the jam-packed episode features a group date, two one-on-one dates and two rose ceremonies. (Why is Chris Harrison leaving?)

Contestants play “Danger Word,” “Name Dropper,” “Oh Ship” and “Blindfolded Musical Chairs.” (Back-to-back episodes of The Wall follow at 9.)

Season 1 finale: Elena, Paco, and Father Vergara take shelter as they attempt to free those under the spell of the Black Circle.

The Big Alice crew is granted shore leave on Snowpiercer. (Read preview from Lena Hall; who were TVLine’s Performers of the Week?)

Lynn continues to be concerned about Jefferson; Jennifer takes an interest in a new boy at school. (Read about the premiere’s real-life influence.)

Season 9 finale: The final three must make a cake that reflects one of Earth’s biomes: desert, rainforest or coral reef. Whee…?

Lim tends to a pregnant patient with an aggressive tumor; Claire makes a disconcerting discovery about certain practices at the hospital. (Watch sneak peek.)

Basic cable finale: Tracy learns that the contamination radius may be even bigger than anyone expected.