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SUPERGIRL Episode Title: S03E05 "Damage"
MORGAN EDGE SETS HIS SIGHTS ON LENA - When multiple children get sick from lead poisoning, Morgan Edge (guest star Adrian Pasdar) points the finger at Lena (Katie McGrath) and blames her creation of the lead bomb she made to save National City from the Daxamites. While Lena knows she never intended any harm, she fears there may have been a flaw in her design, leaving her responsible. Kara (Melissa Benoist) teams up with Samantha (Odette Annable) to clear Lena's name, but it turns out to be harder than they thought. Meanwhile, Alex (Chyler Leigh) and Maggie (guest star Floriana Lima) make a crucial decision about the future of their relationship. Kevin Smith directed the episode
SUPERGIRL Episode Title: S03E06 "Midvale"
ESCAPE DOWN MEMORY LANE - Kara (Melissa Benoist) and Alex (Chyler Leigh) head home to Midvale for a little R&R. While there, Kara recalls a painful memory of a childhood friend's death and how that traumatic experience brought the Danver sisters closer together. Izabela Vidovic plays Young Kara and Olivia Nikkanen plays Young Alex in flashbacks
The Flash Episode Title: S04E05 "Girls Night Out"
KATEE SACKHOFF ("BATTLESTAR GALACTICA") AND EMILY BETT RICKARDS ("ARROW") GUEST STAR - Having received an ominous threat from her old boss, Amunet (guest star Katee Sackhoff), Caitlin (Danielle Panabaker) fears that her past time as Killer Frost may be back to haunt her. Felicity (guest star Emily Bett Rickards) comes to Central City to help the girls celebrate Iris's (Candice Patton) bachelorette party, while Cisco (Carlos Valdes), Joe (Jesse L. Martin) and the guys take Barry out for a night on the town.
THE FLASH Episode Title: S04E06 "When Harry Met Harry…"
ONE HARRY, TWO HARRYS, THREE HARRYS, FOUR - When collectors of Native American artifacts are attacked by a meta named Mina Chayton (guest star Chelsea Kurtz) who can bring inanimate objects to life, Barry (Grant Gustin) turns to a surprising ally for help. Determined to crack the identity of The Thinker, Harry (Tom Cavanagh) enlists Cisco's (Carlos Valdes) help to summon the ultimate think tank: "The Council of Wells'," a roundtable of the brightest Harrison Wells' from various Earths.
DC'S LEGENDS OF TOMORROW Episode Title: (#305) "Return of the Mack"
HELPING ONE OF THEIR OWN - When Nate (Nick Zano) thinks he has found a pattern to the anachronisms, it leads the Legends to London in 1897 to hunt down a time-traveling vampire. When they arrive in London, they run into Rip (guest star Arthur Darvill), but not everyone welcomes him back so quickly, leaving Sara (Caity Lotz) to make a tough choice in the end. Amaya (Maisie Richardson-Sellers) tries to connect with Zari (Tala Ashe), but she is still struggling with being part of the team. Meanwhile, Stein (Victor Garber) discovers what Ray (Brandon Routh) and Jax (Franz Drameh) are up to and is not entirely pleased.
DC'S LEGENDS OF TOMORROW Episode Title: S03E06 "Helen Hunt"
A DIFFERENT KIND OF WAR - When the Legends track down an anachronism in 1930s Hollywood, they discover it's none other than a time-displaced Helen of Troy and she's just started a war between two film studios. As the Legends try to fix history and return Helen (guest star Bar Paly) to the Bronze Age, things get complicated when they are blindsided by the appearance of a former enemy. Sara (Caity Lotz) contemplates an offer she is made, which would make the Legends leave the anachronisms be. Meanwhile, Stein (Victor Garber) and Jax (Franz Drameh) find themselves in an unusual predicament.
ARROW Episode Title: S06E05 "Deathstroke Returns"
Bennett) returns and asks Oliver (Stephen Amell) for help in tracking down his son. When they learn Joe (guest star William Franklyn-Miller) has been taken hostage by mercenaries, their mission to save him gets complicated by a terrible revelation that could shatter Slade's hopes of reunion forever. Meanwhile, Vigilante reappears in Star City. Joel Novoa directed the episode written by Ben Sokolowski & Spiro Skentzos (#605).
ARROW Episode Title: S06E06 "Promises Kept"
OLIVER MAKES A BIG DECISION - As Slade (guest star Manu Bennett) continues to uncover clues about his son's last few years, Oliver (Stephen Amell) makes a big decision. Meanwhile, the Green Arrow (David Ramsey) leads the team into battle against "The Dragon," a villain who is stealing valuable tech in Star City.
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SUPERGIRL Episode Title: S03E03 "Far From the Tree"
CARLOS BERNARD ("24") GUEST STARS; HELEN SLATER RETURNS - Eliza (guest star Helen Slater) throws Alex (Chyler Leigh) and Maggie (guest star Floriana Lima) a wedding shower, which causes Maggie to reach out to her estranged father (guest star Carlos Bernard). Supergirl (Melissa Benoist) joins J'onn (David Harewood) on a personal mission.
SUPERGIRL Episode Title: S03E04) "The Faithful"
CHAD LOWE GUEST STARS - Kara (Melissa Benoist) investigates a secretive new group whose leader, Thomas Coville (guest star Chad Lowe), has a mysterious connection to Supergirl. Meanwhile, Samantha (Odette Annable) feels like she's letting Ruby (guest star Emma Tremblay) down, and J'onn (David Harewood) confesses an old secret.
DC'S LEGENDS OF TOMORROW Episode Title: S03E03 "Zari"
When Sara (Caity Lotz) receives a distress call from their "befriended" agent at the Time Bureau, she learns that they have been tasked with going to the future to capture a rogue time traveler. Unfortunately, the Legends make things worse by trying to protect an outlaw named Zari (Tala Ashe), to hopefully lure in the time travelling assassin. Meanwhile, Stein (Victor Garber) tries to diagnose Amaya's (Maisie Richardson-Sellers) condition, but Nate (Nick Zano) discovers an unusual treatment that Amaya begrudgingly agrees to.
DC'S LEGENDS OF TOMORROW Episode Title: S03E04 "Phone Home"
HELPING ONE OF THEIR OWN - The Legends learn that Ray Palmer (Brandon Routh) will die because they broke time, causing them to race back to 1988 to try and save his life. When they arrive, they are surprised to learn that young Ray Palmer has befriended a time-displaced baby Dominator putting him in harm's way with the government and the Dominator's mother. New to the ship and missions, Zari (Tala Ashe) must find her place and learn to trust the team. Meanwhile, Stein (Victor Garber) begins working on a secret project on the ship which makes Rory (Dominic Purcell) and Jax (Franz Drameh) suspicious.
THE FLASH Episode Title: S04E03 "Luck Be a Lady
Barry (Grant Gustin) and the team are hit by a string of bad luck and realize it is the handiwork of a new meta, Becky (guest star Sugar-Lyn Beard) nicknamed Hazard, who has the ability to give others bad luck, while cashing in the benefits for herself. Meanwhile, Harry Wells (Tom Cavanagh) returns to Earth-1 to give Wally (Keiynan Lonsdale) a message from Jesse.
THE FLASH Episode Title: S04E04 "Elongated Journey Into Night"
TOM CAVANAGH DIRECTS; DANNY TREJO GUEST STARS AS BREACHER - Cisco (Carlos Valdes) is shocked when Gypsy's (guest star Jessica Camacho) father, Breacher (guest star Danny Trejo), shows up on Earth-1. Breacher takes an immediate disliking to Cisco and decides to hunt him. Meanwhile, Barry (Grant Gustin) runs into his old nemesis, Ralph Dibny (guest star Hartley Sawyer).
ARROW Episode Title: S06E03 "Next of Kin"
A rogue black ops team led by Onyx (guest star Chastity Dotson) breaks into Kord Industries and steals something lethal. Oliver (Stephen Amell) struggles to connect with William (guest star Jack Moore) so he reaches out to a surprising source for help. =
ARROW Episode Title: S06E04 "Reversal"
BLACK SIREN STRIKES AGAIN - Just as Oliver (Stephen Amell) starts to get things in order, Black Siren (Katie Cassidy) launches another attack on the citizens of Star City.