TV THIS WEEK: Castle gets its geek on, The Walking Dead and more!

Oh, it's a good week to be a Nathan Fillion fan. First there's major sci-fi fun to be had on this week's Castle, with a murder investigation at a Comic-Con-esque convention, and then the Science Channel celebrates Firefly's 10th anniversary with a marathon and a special called Browncoasts Unite.

Also this week, we'll get more details of the blackout on Revolution, Oliver gets arrested for murder on Arrow, Sam and Dean face an avenging ghost on Supernatural, American Horror Story: Asylum kicks off part one of a two-parter about secrets, Deals From the Darkside explores a collector who purchases the world's darkest collectibles, Wil Wheaton and LeVar Burton guest-star on The Big Bang Theory, Connor takes hostages on The Vampire Diaries, the crew of the Colorado are attacked on Last Resort, a photo is published of Vincent on Beauty & The Beast, Reese and Zoe go undercover in the suburbs on Person of Interest, Jason Gedrick guest-stars on Grimm, Walter searches for something that will aid in their battle against the Observers on Fringe, Claudia Black returns on Haven's two-parter. Ghosts join an electrical storm on Syfy's Ghost Storm, Ruby may have killed someone during the full moon on Once Upon a Time, and the group reels from their losses on The Walking Dead.

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

Monday, Nov. 5

Castle (ABC) 10:01 p.m. - "The Final Frontier"

Jonathan Frakes alert! Castle has embraced its inner geek before with a nod to star Nathan Fillion's Firefly roots, but this episode takes things to a whole new level. When a murder occurs at a sci-fi convention, Castle and Beckett's investigation takes them deep into the world of sci-fi nerddom. Next Gen's Jonathan Frakes directs and has a cameo, and Star Trek: Deep Space Nine's Armin Shimerman and Eureka's Ed Quinn guest-star. Beyond that we'll get to see Beckett's fangirl side come out and a lot of insider Star Trek and Firefly jokes.

Here's a sneak peek:

Revolution (NBC) 10:01 p.m. - "The Children's Crusade"

It looks like we're in for more details about the blackout, as Charlie and the gang take another side trip. This time Charlie tries to help a boy and his friends, despite Miles' better judgment, and Rachel faces someone from her past.

Here's a preview:

Tuesday, Nov. 6

Total Blackout (Syfy) 10:00 p.m. - "Creatures of Darkness"

If you want to avoid the election-day coverage, you can check out this game show action as the contestants are faced with having to transfer creatures from one tank to another, and they must navigate a maze that has obstacles.

Here's a look:

Viral Video Showdown (Syfy) 10:30 p.m. - "Sports Promo"

Two teams, one from New York and one from L.A., have four days to come up with a viral video that promotes a new sport sensation.

Here's a preview:

Wednesday, Nov. 7

Arrow (The CW) 8 p.m. - "Damaged"

When Oliver is arrested for murder—doesn't it seem a little early in the show for THAT plot line?—he insists that Laurel take his case. Meanwhile, Oliver remembers his encounter on the island with Deathstroke.

Here's a promo:

Supernatural (The CW) 9 p.m. - "Southern Comfort"

Garth's back to help the brothers with an avenging ghost that might be responsible for murder. Meanwhile, Sam and Dean have issues.

Here's a sneak peek:

Ghost Hunters (Syfy) 9 p.m. - "Heir Apparition"

Could a secret child of a former senator be the cause of a haunting at the Governor's Mansion in Hampton Falls, N.H.? The TAPS team investigates.

Here's a preview:

American Horror Story: Asylum (FX) 10 p.m. - "I Am Anne Frank, Part 1"

Part one of a two-parter! More freaky horror comes to light as a patient exposes Arden's secrets. Meanwhile, Kit discovers a secret about Grace.

Here's a look:

Deals From the Darkside (Syfy) 9 & 9:30 p.m. - "Titanic Deck Chair" and "Houdini's Handcuffs"

Series premiere! "The world's darkest collector" hunts down the world's darkest collectibles in this new half-hour series. First up, it's a deck chair from the Titanic and Houdini's handcuffs.

Here's a promo:

Other Wednesday shows of interest:

On NBC's The Neighbors (8:30 p.m.), it's Zabvronian mating season and Debbie and Marty's anniversary in "50 Shades of Green."

Thursday, Nov. 8

The Big Bang Theory (CBS) 8 p.m. - "The Habitation Configuration"

Wil Wheaton and LeVar Burton alert! They're back! The Star Trek: The Next Generation stars pop up in an episode that has Sheldon and Amy reviving their web series, Fun With Flags, with Wheaton agreeing to appear. However, when Amy and Wil don't get along, Sheldon gets trapped in the middle. Elsewhere, Wolowitz agrees to move out of his mother's house to appease his new wife. No word on where Burton fits into the action, but we're betting it's going to be good.

The Vampire Diaries (The CW) 8 p.m. - "The Killer"

When Connor takes Matt, Jeremy and April hostage at the Grill, Stefan and Klaus form an uneasy alliance to stop him. Meanwhile, Bonnie tries to get past her guilt and fear. Wouldn't it be nice if she realized she's one of the most powerful people an earth and stopped feeling bad about it?

Here's a preview:

Last Resort (ABC) 8 p.m. - "Another Fine Navy Day"

The crew suffers a mysterious attack. Meanwhile, an illness causes hallucinations.

Here's a promo:

Beauty & the Beast (The CW) 9 p.m. - "Saturn Returns"

Cat and Vincent get closer, but their secret may be out when his picture appears in a newspaper. Meanwhile, Cat and Tess investigate a woman's disappearance.

Here's a preview:

Person of Interest (CBS) 9 p.m. - "The High Road"

Reese's goes undercover in the suburbs with Zoe to protect a father whose number has come up.

Here's a promo:

Elementary (CBS) 10 p.m. - "Flight Risk"

Holmes believes a plane crash victim was murdered. Meanwhile, Watson tries to arrange a meeting with Holmes and his father.

Friday, Nov. 9

Grimm (NBC) 9 p.m. - "To Protect and Serve Man"

Jason Gedrick alert! The witch is back, literally, as Adalind Schade returns to make some trouble. Meanwhile, Hank's new knowledge of Wesen causes him to suspect he may have made a mistake on an arrest in the past, and it looks like the cat's about out of the bag when it comes to Juliette and the Captain. Claire Coffee, who plays Adalind, has been promoted to a regular, so you'll be seeing more of her.

Here's a preview:

Fringe (Fox) 9 p.m. - "Through the Looking Glass and What Walter Found There"

With the team still reeling from their loss, Walter hunts for something which is vital in the battle against the Observers.

Here's a look:

Haven (Syfy) 10 p.m. - "Magic Hour, Part 2"

Part two of a two-parter! Claudia Black alert! Black is back in this conclusion to the shocking cliffhanger which revealed the identity of the Bolt Gun Killer and left one of the characters on the wrong end of a gun.

Here's a promo:

Other Friday shows of interest:

On the Bio Channel's My Ghost Story: Caught on Camera (9 p.m.), a man suffers misfortune after he finds arrowheads on his property. Then, on the channel's Cursed (10 p.m.), a house, swamp and theater seem to be cursed in "Unwelcome Guests." On the Travel Channel's Ghost Adventures (9 p.m.), the team use Zak's dog to try and contact a little girl spirit at the historic Brookdale Lodge in California.

Saturday, Nov. 10

The Wishing Tree (Hallmark) 8 p.m.

It must be Jason Gedrick's weekend. First he shows up on Grimm and then in this Hallmark movie. Gedrick stars as a widowed professor at a prestigious boarding school who agrees to stay behind with students whose parents are vacationing during the holidays. When one of the kids damages the neighboring town's special "Wishing Tree," a tree where people leave handwritten notes with their greatest wishes, the professor's job is threatened. Eureka's Erica Cerra stars as another teacher who comes to the professor's defense.

Here's a promo:

Ghost Storm (Syfy) 9 p.m.

In this Syfy Saturday night movie, an electrical storm filled with angry souls from a mass suicide threaten the people of a small island. Crystal Allen, Carlos Bernard and Battlestar Galactica's Aaron Douglas star.

Here's a preview:

Other Saturday shows of interest:

On Bio's The Haunting Of... (10 p.m.), Eric Mabius travels to Allaire Village in Farmingdale, N.J., to search for a spirit he saw as a child.

Sunday, Nov. 11

Once Upon a Time (ABC) 8 p.m. - "Child of the Moon"

When someone is killed during a full moon, Ruby becomes the number-one suspect. Meanwhile, in the fairy-tale world, Red Riding Hood meets others like her.

Here's a look:

The Walking Dead (AMC) 9 p.m. - "Say the Word"

Strong stomach alert! After last week's episode, let's just say that Rick going on a Walker-killing rampage would not be a surprise. Meanwhile, the group struggles to deal with heart-wrenching losses and a new arrival. Over in Woodbury, the Governor throws a party for the townfolk, and Michonne's suspicions of the Governor weight on her.

Talking Dead airs at 11 p.m., with Chris Hardwick hosting as The Walking Dead cast, crew and fans discuss the episode.

Here's a preview and a sneak peek of "Say the Word":

Firefly 10th Anniversary: Browncoasts Unite (Science) 10 p.m.

Firefly reunion special! Can you believe it's been 10 years since Firefly aired? After a daylong Firefly marathon, the Science Channel presents this special with most of the cast and crew, including series creator Joss Whedon, stars Nathan Fillion, Summer Glau, Alan Tudyk, Adam Baldwin and Sean Maher, showrunner Tim Minear and writer Jose Molina. The special includes exclusive footage of the Comic-Con Firefly panel and a behind-the-scenes roundtable with the cast and crew.

Here's a preview and a sneak peek:

666 Park Avenue (ABC) 10:01 p.m. - "Downward Spiral"

Jane uncovers one of the Drake's greatest mysteries while searching for Nona's missing grandmother. Meanwhile, a doctor discovers the terrible price of Gavin's help.

Here's a promo:

Other Sunday shows of interest:

On the Animal Planet's season-three premiere of Finding Bigfoot (9 p.m.), the Bigfoot Field Researchers Organization travel to Idaho to study video evidence.

What are you going to watch?

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