Station 19 (ABC at 9) Ben (Jason George, pictured with Chandra Wilson) reaches an important milestone, and Chief Ripley conducts final interviews for the role of captain, on the season finale premiering tonight. (Eric McCandless/ABC)

(All times Eastern.)

Special

Citizen Rose (E! at 10) The second installment of actress/activist Rose McGowan’s limited series.

Premiere

Impossible Engineering: Extreme Railroads (Science at 10) A look at technological breakthroughs that have changed railway transportation.

Returning

Tiny Luxury (DIY at 9) Season 3.

The Carbonaro Effect (truTV at 10) Season 4.

Finales

Gotham (Fox at 8) Barbara gets a team on her side to help secure her position. Season finale.

Grey’s Anatomy (ABC at 8) Alex and Jo face hurdles on their big day. Season finale.

Supernatural (CW at 8) An impulsive decision could affect the rest of Sam’s and Dean’s lives. Season finale.

Arrow (CW at 9) Oliver and Diaz have a final battle. Season finale.

Life in Pieces (CBS at 9) Samantha’s suprise party takes an unexpected turn. Season finale.

S.W.A.T. (CBS at 10) Street’s relationship with his mother gets in the way of his job. Season finale.

Late Night

Daily Show (Comedy Central at 11) The Best of Roy Wood Jr. Vol. 2.

Fallon (NBC at 11:34) Tina Fey, Paul Bettany, Courtney Barnett.

Colbert (CBS at 11:35) Jake Tapper, Liam Payne featuring J. Balvin.

Kimmel (ABC at 11:35) Will Arnett, Lilly Singh, MGMT.

Corden (CBS at 12:37) Steven Tyler, Morena Baccarin, Kacey Musgraves.

Meyers (NBC at 12:37) Kate McKinnon, Candice Bergen, André Leon Talley, Matt Byrne.

Sarah Polus