SERIES PREMIERE: Miniseries “Eve of Destruction” (Reelz at 8 p.m.) gets pretty dark as two scientists find themselves hijacked by eco-terrorists when they try to discover unliminted energy — and a series of unfortunate events lead them to a black hole that could potentially destroy the Earth.

The contestants on “Fashion Star” (NBC at 8) get a chance to work directly with the buyers to get advice, but one designer makes an error by refusing to listen to the buyer’s words of wisdom.

Brad and Jane host a couples-only game night on “Happy Endings” (ABC at 8, 8:30), and to get a sense of Penny’s state of mind after she attends with Pete, she’s motivated to write a screenplay called “Black Plague: A Love Story.”

FINALE WATCH: The final season of “Spartacus: War of the Damned” (Starz at 9) concludes as Spartacus and the rebel force are outnumbered but still must get ready for a final epic battle against the Romans.

The graduating class from Fairleigh Dickinson University in New Jersey gives the school a gift from the guys on “Tanked” (Animal Planet at 9), who create a custom fish tank for the university.

On “Vegas” (CBS at 9), the district attorney isn’t too keen on the idea of using wiretaps on Savino’s phones, but Ralph, Jack and Katherine are eager to see what they could learn about his activities.

A woman on her second marriage decides to choose a gown without consulting her daughters on “Say Yes to the Dress: Atlanta” (TLC at 9, 9:30), while another bride-to-be panics when she gains a few pounds and is worried that her dress won’t fit.

SERIES PREMIERE: Drama “Da Vinci’s Demons” (Starz at 10), a historical fantasty about Leonardo da Vinci as a 25-year-old artist in Florence, is reviewed by Hank Stuever on Page C6.

Things blow up between Linda and Danny on “Blue Bloods” (CBS at 10) when Linda refuses to let him interview an accomplice to a crime who is about to go into surgery — and winds up dying.

Singer Adam Levine is on “The Tonight Show With Jay Leno” (NBC at 11:35), along with a performance by the Airborne Toxic Event.

Actor Jason Biggs and actress Keke Palmer are on “Late Late Show With Craig Ferguson” (NBC at 11:35).

— Emily Yahr