Kat witnesses when Volk takes the law into his own hands. Mae’s discussions with Senator Thrush have unintended consequences.

Murphy and Jess are both going through similar situations, but they are handling things very differently. Meanwhile, Felix and Jess share a beautiful moment together.

Alfred and Martha Kane take a train ride into the countryside on an assignment, while tragedy strikes in London.

Complicating the already daunting job of raising two boys, Clark and Lois must also concern themselves with whether or not their sons Jonathan and Jordan could inherit their father’s Kryptonian…

Layton uses his new position as train detective to investigate the murder while gathering intel for the revolution on the side. Meanwhile, Melanie faces a resource crisis, with potentially drastic…

As Pat teaches Courtney, Yolanda, Beth and Rick the importance of teamwork, the ISA converge to figure out who is trying to take them down. Elsewhere, as the school prepares…

Murphy, unable to deal with things, begins to push everyone away, including Max. Meanwhile, Murphy and Jess have a heart-to-heart.

Kara must help Hank face his painful past when a White Martian, a member of the alien race that wiped out his people, kidnaps Senator Miranda Crane, an anti-alien politician….

A grisly murder stokes class division on Snowpiercer, the Great Ark Train. Melanie Cavill, the powerful head of hospitality, deputizes a dangerous rebel to help solve the killing — Andre…

Nimue weighs a fateful decision, Uther takes a defiant step, and Gawain discovers not all is what it seems within the Red Paladin camp.

Kara is moved by the story of a missing woman named Izzy and decides to investigate despite Snapper Carr’s order to leave it alone. Kara takes Mon-El with her to…

When a new threat emerges in National City, Kara/Supergirl teams up with her cousin, Clark Kent/Superman, to stop it. Kara is thrilled to have family in town but it leaves…

Hondo puts aside his misgivings about Jim Street’s recklessness and allows the newbie to go undercover as a broker in a luxury car theft ring to bust a ruthless trafficker….

After a schoolmate claims to be an alien and proves it by using heat vision, Clark investigates and believes the boy is from Krypton. Meanwhile, Helen confronts Lex over the…

Ollie’s stinky sweat is a hot commodity in the Monsterverse, and he makes a deal in exchange for it.

Adrift in space, the team find themselves in the middle of a very strange murder mystery.

Hondo and Jessica’s secret relationship comes to a crossroads when Michael Plank, the president of the police commission, discovers their affair. Also, when Hondo and the team assist with the…

Kara’s Thanksgiving may be ruined when she suspects her foster mother, Dr. Danvers, who is coming to town, disapproves of her new role as a superhero. Also, when an accident…

Elida deals with the life she left behind. Isaac and Amae find themselves in risky territory.

Seg is approached by a Black Zero leader as Rao finds a scapegoat for the failed Rankless Initiative.

Angus MacGyver and Jack Dalton, special agents for the Department of External Services (DXS), join forces to recover a missing bioweapon that has the ability to destroy hundreds of thousands…

Zod brings Doomsday to heel and unleashes him on the Rebels, and Seg, Val, and Kem fight a last-ditch battle to hold the creature back while their compatriots escape.

The neurosurgery team retreats to David’s beach house, where Mitch Levine shares his news. Amanda’s husband inadvertently reveals the baby’s gender.

Tensions between Third Class and First Class are boiling as Melanie stages the trial of the Snowpiercer killer. Third Class threatens a work stoppage, demanding representation on the jury, and…

Hondo and the team go on the hunt for a serial killer who escaped justice two years prior by faking his death. Also, Hondo worries that Buck Spivey, the team’s…

When Kara’s attempts to help National City don’t go according to plan, she must put aside the doubts that she — and the city’s media — has about her abilities…

Superman’s grandfather, Seg-El, learns Krypton is in danger of being destroyed so that his future grandson will never be born.

Mac and the team have no time to reminisce while visiting Mac’s and Bozer’s hometown when they immediately start searching for a kidnapped prodigy from Mac’s old middle school, Valerie.

The team is pulled away from their Halloween plans when they head into the dreaded Bermuda Triangle to retrieve the Vice President’s son after his plane goes down with a…

Barry must protecting a woman and her child from her Criminal ex-husband.

Whitney returns to Smallville, eager to start back up where he left off with Lana. But everything isn’t what it seems…

When Mac and Jack are trapped inside Mac’s house, which his nemesis, The Ghost, has rigged with explosives, Mac uses a karaoke mic and an audio transformer to let the…

Clark has his first run-in with red kryptonite in this exploration of classic Superman mythology, turning immoral when he gets his high-school ring holding a piece of rock. Meanwhile, Lex…

Lex hires some thugs to bug Lionel’s office but things get out of control when Lionel and Martha are taken hostage, and Clark must rescue them without revealing his secrets.

Clark gains a new power – heat-vision. As he struggles to control it, Lex gets married to the new Smallville High teacher, Desiree Atkins, little does he know that she…

Lex and Victoria are victims of a suspected household poltergeist. As the disturbances become more violent, suspicion lands on Amy, the daughter of a house servant who is obsessed with…

CADMUS attacks National City with a Kryptonite-powered villain who ends up seriously hurting Supergirl. Superman blames Hank because the Kryptonite was stolen from the DEO. Meanwhile, Kara’s first day at…

Personal and professional stress get the better of Kara when she goes too far during a training exercise against Red Tornado, a military cyborg commissioned by Lucy Lane’s father, General…