TV THIS WEEK: Supernatural spins off, Resurrection's finale and more!

It's a good week for Supernatural fans.

The nine-season CW series is heading toward its season finale, with a 10th season already guaranteed, but this week's episode is particularly special. It's not only a new adventure for the Winchester brothers, but a backdoor pilot for the potential spinoff series, Bloodlines. Plus, Resurrection ends its brief first season, Arrow deals with the fallout from a shocking death, Cobie Smulders returns to Agents of S.H.I.E.L.D., and a new king is crowned on Game of Thrones.

Check out the week in TV below. What will you be watching?

Highlights of the Week

Supernatural (The CW) Tuesday, 9 p.m. - "Bloodlines"

Spinoff time! Supernatural is a show with impressive endurance. Even if you can find plenty of think pieces online proclaiming that the show should have ended a few years back, it continues to be one of The CW's highest-rated and most consistently watched series after nine years on the air. Now Supernatural's not only getting a 10th season, but it's also taking advantage of its devoted fanbase with a potential spinoff. This week's episode will feature Sam and Dean encountering a group of monster tribes, including werewolves, shapeshifters and more, running the underworld of Chicago. Those tribes and their relationships will serve as the basis for Supernatural: Bloodlines, a potential new series that could it make on The CW's 2014-2015 slate. So if you'd like more Supernatural goodness on your TV next season, tune in tomorrow night and check out "Bloodlines." Here's a preview:

Marvel's Agents of S.H.I.E.L.D. (ABC) Tuesday, 8 p.m. - "Nothing Personal"

Cobie Smulders alert! -- Last week Agents of S.H.I.E.L.D. got a nice boost to its audience, topping 6 million viewers for the first time in weeks. It's not anywhere near the strong series premiere numbers it put up in the fall, but the momentum of the past few episodes finally seems to be translating to a little growth. This week the show hopes to build on that growth even more with an appearance by Captain America: The Winter Soldier co-star Cobie Smulders as Agent Maria Hill. With their list of allies growing shorter, Coulson and company team up with Hill in the continued hunt for the Clairvoyant. We've been talking about this show's ratings for months, and most of the news has been bad, or at least not good. Now it looks like the show is poised to deliver something bigger. Let's see if it does.

Arrow (The CW) Wednesday, 8 p.m. - "City of Blood"

Arrow's been pushing itself in some daring directions for much of the second season, introducing new, wilder villains and raising the stakes over and over again. Last week the stakes hit another level, as Oliver's mother Moira sacrificed herself to save her children and was murdered by Slade. The stage is set for a major payoff to the Arrow/Slade rivalry, and the added emotional weight of it could make it the biggest hero/villain showdown the series has delivered yet. We've still got two episodes to go until the series finale, though, so the fireworks might be put off a bit. For now, Oliver and Thea must deal with their mother's death, and Oliver must weigh his options in turning himself over to Slade, while Diggle and Felicity fight to talk him out of it.

Grimm (NBC) Friday, 9 p.m. - "My Fair Wesen"

Grimm took an interesting storytelling risk last week, throwing a new Grimm -- Trubel -- into its already somewhat crowded slate of storylines. Now Nick has to deal with someone with his abilities, but without his experience, setting the stage for a mentoring story among everything else that's going on. On the one hand, it could add an interesting dynamic to everything Nick and company are already facing. On the other, it could make things ... crowded. Either way, the final episodes of Grimm's third season will certainly prove interesting with this new kink thrown into the mix. 

Resurrection (ABC) Sunday, 9 p.m. - "Torn Apart'

Season finale! - Resurrection's ratings haven't been quite as strong lately as they were a few weeks ago, when it premiered, but the eight-episode first season has been a welcome addition to ABC's Sunday-night lineup, and a second season seems probable. Even at a time when Sunday juggernauts like The Walking Dead and Game of Thrones were marching their season finales and premieres out, Resurrection kept delivering its network strong numbers. This week, we see if it can finish strong, when Arcadia is gripped by unnatural forces that return of the dead reaches critical mass. 


Monday, April 28

Star-Crossed (The CW) 8 p.m. - "Give Me a Torch"

Emery is kidnapped, while Sophia believes she knows the truth about Taylor's pregnancy.

The Tomorrow People (The CW) 9 p.m. - "Kill Switch"

As Jedikiah works to perfect an antidote for the serum, Cara and Stephen must buy him time.

Warehouse 13 (Syfy) 9 p.m. - "A Faire to Remember"

Pete and Steve head to a Renaissance Faire to track down an artifact, while Claudia tries to revive her sister.

Metal Hurlant Chronicles (Syfy) 10 p.m. & 10:30 p.m. - "Shelter Me" & "Second Chance"

James Marsters stars! - A woman wakes up in a bunker with a man who tells her the world has ended. A man with a dangerous creditor on his trail goes in search of a mythical treasure.

Tuesday, April 29

Person of Interest (CBS) 10 p.m. - "Beta"

Greer tries to lure Finch out, while Reese and Shaw are hunted by Decima.

The Originals (The CW) 8 p.m. - "A Closer Walk with Thee"

Genevieve must fight to keep control of the witches, while Hayley is in danger after confronting an enemy.

Jim Henson's Creature Shop Challenge (Syfy) 9 p.m. - "Swamp Things"

The designers craft camouflaged creatures that will hide in a mystical swamp. 

From Dusk Till Dawn (El Rey) 9 p.m. - "Pandemonium"

The Gecko Brothers and the Fuller family are all set to watch the performance of Santanico Pandemonium when Ranger Gonzalez shows up looking for revenge. 

Wednesday, April 30

Revolution (NBC) 8 p.m. - "$#!& Happens"

When the group is confronted by Texas Rangers, Miles get separated. 

The 100 (The CW) 9 p.m. - "Contents Under Pressure"

To save a friend, Clarke and Abby must attempt a dangerous procedure.

Thursday, May 1

The Vampire Diaries (The CW) 8 p.m. - "What Lies Beneath"

Damon suggests they all retreat to a remote cabin when Stefan and Elena are threatened.

Friday, May 2

Continuum (Syfy) 10 p.m. - "Minutes to Air"

Alec's agreement with Kellog crumbles. Keira and Carlos try to release hostages. 

Saturday, May 3

Orphan Black (BBC America) 9 p.m. - "Mingling Its Own Nature With It"

After hitting the road with Felix, Sarah reunites with a flame from the past, and faces a harsh truth. 

Da Vinci's Demons (Starz) 9 p.m. - "The Vault of Heaven"

Leonardo's search for the Book of Leaves takes a deadly turn. A Sultan's son takes an interest in Lucrezia.

The Real History of Science Fiction (BBC America) 10 p.m. - "Invasion"

In the third episode of this limited documentary series, the theme of alien invasion will be explored.

Sunday, May 4

Game of Thrones (HBO) 9 p.m. - "First of His Name"

Cersei and Tywin plot the future of the kingdom, while Jon begins a new mission North of the Wall and Dany makes new plans.

Believe (NBC) 9 p.m. - "Prodigy"

Tate tries to keep Bo focused, but a premonition sidetracks her training.

Cosmos: A Spacetime Odyssey (FOX) 9 p.m. - "The Lost Worlds of Planet Earth"

The autobiography of the Earth, and the hidden depths of our oceans, are explored.

Once Upon a Time (ABC) 8 p.m. - "Kansas"

As the Wicked Witch's power grows, it seems there's only one person who can stop her: a girl named Dorothy.

Salem (WGN America) 10 p.m. - "In Vain"

After discovering who witnessed the witches' ceremony, Mary ponders a course of action.

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