Sci-Fi This Week: Believe Premieres, Lady Sif Comes To S.H.I.E.L.D.

Tonight on NBC it’s the premiere of Believe, the new supernatural drama from Alfonso Cuarón and J.J. Abrams. We’ve been looking forward to seeing this one for some time now — watch the pilot and then come back here to tell us what you thought!

If you caught the final scene of last week’s Agents of S.H.I.E.L.D. then you’ve already met this week’s bad girl: the Asgardian seductress Lorelei. This week Lady Sif, the warrior from Thor’s band of friends, visits Earth on the hunt for her.

On The CW Supernatural, Arrow, The Tomorrow People, and The Vampire Diaries all have the week off.

Here’s your complete schedule for this week in sci-fi and fantasy television:

STAR-CROSSED
The CW, 8/7c
“And Left No Friendly Drop.” Roman is furious when the sector guards ransack his family’s pod looking for restricted technology, but discovers evidence that his late father may have hidden something.

BITTEN
Syfy, 8/7c
“Vengeance.” The Pack push personal issues aside to focus on survival after Santos sics a notorious killer on them, but Elena’s feelings for Clay race to the surface after her own close call with death.

BEING HUMAN
Syfy, 9/8c
“Too Far, Fast Forward!” Sally tries to right her wrongs and free herself from the past she’s stuck in, but the only way she can figure on doing that is by magically transporting herself to the present and seeking the aid of an old foe.

BELIEVE
NBC, 10/9c
“Pilot.” After a failed attempt to kidnap a young girl, a group of protectors spring an inmate from death row and charge him with protecting the remarkable young Bo — whose unique, supernatural powers are beginning to grow stronger.

LOST GIRL
Syfy, 10/9c
“Destiny’s Child.” Bo resolves to go to hell and back to get the answers she’s been searching for, with or without her friends’ support. Meanwhile, Kenzi’s determined to uncover what Trick’s hiding.

TEEN WOLF
MTV, 10/9c
“De-Void.” Scott and Lydia join forces. Meanwhile, Stilinski faces a review board.

AGENTS OF S.H.I.E.L.D.
ABC, 8/7c
“Yes Men.” When Coulson and his team are attacked by Lorelei — a deadly seductress who escaped from Asgard — Thor’s Lady Sif, her longtime nemesis, steps in to try to save them.

THE ORIGINALS
The CW, 8/7c
“Farewell to Storyville.” Klaus, Elijah and Rebekah become trapped in the City of the Dead cemetery by a witch’s boundary spell. Klaus and Rebekah trade angry accusations until Elijah reveals a dark secret from the family’s past. Meanwhile, Marcel races to free Rebekah but he has to make a deal with Genevieve.

REVOLUTION
NBC, 8/7c
“Exposition Boulevard.” Monroe, Charlie, and Connor make their way back to Willoughby, where they find that the Patriots’ reeducation center is up and running. An encounter with two of the center’s young cadets leaves Rachel and Miles divided on the lengths they are willing to go in order to take down the Patriots.

ONCE UPON A TIME IN WONDERLAND
ABC, 8/7c
“Dirty Little Secrets.” In flashback, Cyrus’ actions lead to a fateful day that leaves his mother near death, resulting in a decision that comes with a binding price he and his brothers have to pay. Meanwhile, after banding together, Alice, Cyrus, The Knave and the Red Queen split up into two groups that leaves the Knave and the Red Queen face to face with the fearful Jabberwocky.

GRIMM
NBC, 9/8c
“Once We Were Gods.” Nick and Hank find themselves thrown into the middle of an ancient battle and things heat up when the Wesen Council decides to get involved. Monroe and Rosalee fill everyone in on early Wesen history.

HELIX
Syfy, 10/9c
“Black Rain.” Peter leads the Vectors in a desperate final attempt to spread the virus, while the CDC scientists work together and successfully create a cure just as their lives come under threat from Ilaria Corporation’s deadly mercenaries.

ONCE UPON A TIME
ABC, 8/7c
“Witch Hunt.” The Wicked Witch of the West has come to Storybrooke, and is turning the town’s people into flying monkeys.

THE WALKING DEAD
AMC, 9/8c
“The Grove.” After establishing a new shelter, the group considers things returning to they way they used to be.

RESURRECTION
ABC, 10/9c
“Unearth.” The Langstons are forced to confront secrets from their past they’d rather leave buried when Bellamy pushes to have Jacob’s tomb exhumed. Meanwhile, a second returned child turns another family upside-down.

What are YOUR top picks for this week?