TV THIS WEEK: Vamps, witches and more invade for premiere week!

As sad as we are to see Torchwood and True Blood go, it's time to get on with fall as we get early premieres from The CW with the third season of The Vampire Diaries and the new witch series, The Secret Circle, and from the Cartoon Network with the season-four premiere of Star Wars: The Clone Wars.

And the Syfy Monday shows are back with Matt Frewer's Taggart returning to Eureka, Kate Mulgrew continuing her run on Warehouse 13 and Brent Spiner popping in to Alphas. Also this week, TAPS finds shocking evidence on Ghost Hunters, John Noble takes a look at mad science on Dark Matters: Twisted But True, Archer goes missing, there's a worthy repeat on Fringe, Audrey and Nathan face what might be a wendigo on Haven, the Doctor runs into a God complex on Doctor Who, and swords cross on Drop Dead Diva.

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

Monday, Sept. 12

Eureka (Syfy) 8 p.m. - "One Small Step"

Matt Frewer alert! Taggart (Frewer) is back as he and Carter investigate a melted cow issue. Meanwhile, Jo considers her future and Deputy Andy accidentally ends up on Titan.

Here's a preview and a sneak peek:

Warehouse 13 (Syfy) 9 p.m. - "Shadows"

Pete takes a trip into the past via Jane's memories to probe the Regent murders. Elsewhere, Claudia and Myka dig into a case involving missing people and the owner of a T-shirt shop. Kate Mulgrew continues her guest arc as Jane, and how cool was Jane's secret identity?

Here's a promo and a sneak peek:

Alphas (Syfy) 10 p.m. - "Blind Spot"

Brent Spiner alert! Star Trek: The Next Generation's Brent Spiner and Rebecca Mader guest-star in this episode, which follows Nina and Hicks as they go undercover to check out an obstetrician (Spiner) who may be involved with Red Flag.

Here's a preview:

Other Monday shows of interest:

On the Science Channel's Curiosity (9 p.m.), Morgan Freeman hosts "Parallel Universes: Are They Real?" Then, on the network's Will We Become Extinct (10 p.m.), scientists look into the question of how we will evolve in the future. And on MTV's Death Valley (10:30 p.m.) vamps snatch bloodmobiles and Capt. Dashell's niece attends a party hosted by a vampire.

Wednesday, Sept. 14

Ghost Hunters (Syfy) 9 p.m. - "Ghostly Evidence"

TAPS takes on the case involving the spirit of a grieving mother at the Reed Homestead in Townsend, Mass., and they get some shocking evidence.

Here's a promo:

Dark Matters: Twisted But True (Syfy) 10 p.m. - "Sexy Secret Agent, Full Body Transplant, Honey I Nuked the Planet"

Fringe's own mad scientist, John Noble, hosts this look at truly twisted science, including the possible brainwashing of radio talk show host Long John Nebel's wife by the CIA and a neurosurgeon's efforts to transplant the head of a rhesus monkey onto the body of a decapitated monkey.

Here's a look:

Other Wednesday shows of interest:

On Syfy's Paranormal Witness (10 p.m.), a naked ghost proves the key in solving the case of a mother and son who vanished on a road trip to California, and a police helicopter in Kentucky encounters a UFO in 1993 on "Haunted Highway/ Kentucky UFO Chase."

Thursday, Sept. 15

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

Season-three premiere! It's Elena's 18th birthday, and it's the show's season premiere, so what are the odds it will be a happy one? While Caroline plans a party for Elena, the vamp magnet is on the hunt for clues to find Stefan. Meanwhile, Stefan and Klaus are trailing a werewolf named Ray Sutton (David Gallagher), and Jeremy's seeing the ghosts of his dead girlfriends. Joseph Morgan, who plays bad boy Klaus, joins the cast as a regular.

Here's a preview:

The Secret Circle (The CW) 9 p.m. - "Pilot"

Series premiere! The CW is hoping to do for witches what they did for vampires in this new teen drama, which explores what happens when teen Cassie Blake (Britt Robertson) loses her mother and moves in with her grandmother in the small Washington town her mother left behind. She soon discovers that her new friends are witches, and they inform her that she's a witch too. Sounds to us like Cassie's in for several seasons of teen angst.

Here's a promo:

Archer (FX) 10 p.m. - "Heart of Archness, Part 1"

Season two returns with a three-parter! Archer goes missing when his bride-to-be is murdered on their wedding day, so Malory sends adventurer Rip Riley (voiced by Patrick Warburton) to find him. However, once Rip tracks Archer down on a tropical island, he has trouble getting the spy to come home.

Other Thursday shows of interest:

On the History Channel's Ancient Aliens (10 p.m.), it's a look at "Aliens and Lost Worlds."

Friday, Sept. 16

Star Wars: The Clone Wars (Cartoon Network) 8 p.m. - "Water War" and "Gungan Attack"

Season-four premiere! Get ready for the ocean planet of Mon Calamari, SCUBA clones and an epic battle as Senator Padmé and her Jedi and clone protectors try to broker a peace to stop a civil war.

Here's a look:

Fringe (Fox) 9 p.m. - "The Day We Died"

Finale repeat alert! Are you dying for Fringe to start its new season? Well, Fox is running the shocking, game-changing season-three finale to get you charged up for next week's season-four premiere of Fringe.

Here's a look:

Haven (Syfy) 10 p.m. - "Who, What, Where, Wendigo?"

When a teenager disappears in Haven's woods, the search party discovers evidence that a wendigo might be lurking in the forest.

Here's a sneak peek:

Saturday, Sept. 17

Doctor Who (BBC America) 9 p.m. - "The God Complex"

In a creepy new episode, the Doctor and his companions check into a mysterious hotel that contains their darkest fears.

Here's a look:

Sunday, Sept. 18

Drop Dead Diva (Lifetime) 9 p.m. - "Bride-a-Palooza"

With only one episode to go, there's the case of a bride-to-be who sues a bridal shop when she's injured during a sales stampede, and the co-owner of a medieval dinner theater wants to stop her brother from selling the family business.

Here's a preview:

Other Sunday shows of interest:

On Discovery's Curiosity: How Will the World End? (8 p.m.), scientists explore end-of-the-world scenarios, along with the Mayan prediction for Dec. 12, 2012.

What are you going to watch?

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