TV THIS WEEK: Chuck meets the Gretas, it's a V finale and more!

Chuck's back this week to face off with two of the Gretas in Chuck, we say goodbye to V (and some of the show's characters) in the big season-two finale, and Destination Truth goes live in search of a banshee in Ireland.

Also—everybody's after Thomas on The Event, Aidan lets us know why it sucks to be a vampire on Syfy's Being Human, the Destiny's crew may get a chance to go home on Stargate Universe, the TAPS team investigates the Old U.S. Mint on Ghost Hunters, Archer has breast cancer, alt-Lincoln pops up on Fringe, Uther discovers Arthur's secret romance on Merlin, Herrick's back on BBC America's Being Human, and Hallmark's movie Time After Time gives a man a chance to visit his younger self. While many of the other shows are done with their runs or in reruns, it's almost hard to remember that The Cape was ever on the air.

Here's what we have to look forward to this week on sci-fi, fantasy, paranormal and spy-fi TV.

Monday, March 14

Chuck (NBC) 8 p.m. - "Chuck Versus the A-Team"

Chuck begins to suspect that Casey might be involved in secret missions, while he also faces the possibility that two perfect new operatives who both seem to be named Greta (Isaiah Mustafa, Stacy Keibler) might affect his future as a spy. Meanwhile, Morgan gets a new roommate and Ellie digs into research that might end up being dangerous. Robin Givens returns to guest-star.

Here's a preview and an A-Team/Buy More parody:

The Event (NBC) 9 p.m. - "Turnabout"

President Martinez takes control after the escape in Alaska, and Sophia discovers what Thomas did during the attack on Mount Inostranka. Elsewhere, Michael heads out to hunt Thomas, while Leila stays with a friend of his. And the NSA continues its efforts to decrypt the satellite transmission.

Here's a look at what's ahead this season:

Being Human (Syfy) 9 p.m. - "I Want You Back (From the Dead)"

When Bernie gets hit by a car, Aidan is torn about what to do to save his life. Meanwhile, Josh decides to slow things down with Nora, and Sally falls for a ghost in the haunted ward of the hospital.

Here's a promo and a sneak peek:

Stargate Universe (Syfy) 10 p.m. - "Twin Destinies"

When Eli finds what may be a way home for the crew, Rush determines that the plan is dangerous. While the crew prepares to implement Eli's plan, Rush decides to stay onboard Destiny and asks for volunteers to join him.

Here's a preview and a sneak peek:

Tuesday, March 15

V (ABC) 9 p.m. - "Mother's Day"

Season-two finale! Things come to an explosive head as Erica and Diana try to convince Lisa to take out Anna. Needless to say, we can probably expect another cliffhanger. Check out the preview below and you'll catch a glimpse of original V star Marc Singer.

So what do you think? Did you like season two? Should V get a third season?

Here's a preview:

Wednesday, March 16

Ghost Hunters (Syfy) 9 p.m. - "French Quarter Phantoms"

The TAPS team heads to New Orleans to check out the Old U.S. Mint, which has a variety of ghostly reports and was the site of a Civil War execution.

Here's a promo and a sneak peek:

Other Wednesday shows of interest:

On the season-one finale of Syfy's Face Off (10 p.m.), the remaining contestants create fairy-tale characters for a cocktail party in "Twisted Tales." And on SOAPnet's Being Erica (11 p.m.), its Dr. Tom's turn to face his past in "Physician, Heal Thyself."

Thursday, March 17

Destination Truth: Live From Ireland - Search for the Banshee Ghost (Syfy) 7 p.m.

Four-hour live investigation! Josh Gates and Team Truth take on Duckett's Grove Castle in Ireland to hunt for a banshee in their first live investigation. They'll be joined by special guests, Warehouse 13's Allison Scagliotti, Ghost Hunter's International's Kris Williams and Barry FitzGerald and Fact or Faked's Jael de Pardo (who used to also be on Destination Truth), for this St. Patrick's Day event.

Here's a promo:

Archer (FX) 10 p.m. - "Stage Two"

Things get serious (okay, not so much) when Archer discovers that he has breast cancer, leaving him to face surgery and his own mortality by way of a vacation to Las Vegas.

Here's a preview:

Friday, March 18

Fringe (Fox) 9 p.m. - "Stowaway"

Over Here Lincoln pops up during the Fringe investigation of an apparent suicide that leads to a woman who can't seem to die. Seth Gabel guest-stars as an alt version of his Over There Lincoln, and this Lincoln doesn't know anything about the Fringe division.

Here's a preview:

Merlin (Syfy) 10 p.m. - "Queen of Hearts"

Arthur and Gwen's budding romance comes to light when Morgana outs them to Uther, which leads the king to banish Gwen. While Arthur threatens to leave with her, Morgana's deviousness takes on a whole different level when she frames Gwen, making it look like she's using magic on the prince.

Here's a preview:

Other Friday shows of interest:

On the Cartoon Network, there are new episodes of Ben 10: Ultimate Alien (7:30 p.m.) and Generator Rex (8 p.m.). And on the Travel Channel's Ghost Adventures (9 p.m.), it's a ghost hunt at "Yorktown Hospital."

Saturday, March 19

Being Human (BBC America) 9 p.m. - "The Longest Day"

It's a battle between the roommates when George discovers Herrick, who he thought was dead, alive and in the hospital's psych ward.

Here's a sneak peek:

Time After Time (Hallmark) 9 p.m.

Nope ... not the 1979 Malcolm McDowell/Mary Steenburgen movie about H.G. Wells traveling to the present to find Jack the Ripper. In this time-traveling movie a reporter (Kaj-Erik Eriksen) runs into his future self (Richard Thomas) while visiting his hometown. Directed by Gary Harvey.

Here's a look:

What are you going to watch?

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