TV THIS WEEK: Harvey Dent comes to Gotham, a Constantine marathon, and more!

A very important new face comes to Gotham, and that's just the beginning of what to watch this week.

That's right, after already giving us the beginnings of Batman, Catwoman, Penguin, and more, Gotham is rolling out its first Harvey Dent episode this week. Plus, Syfy gives you the chance to catch up on Constantine with a marathon, there's a big choice to make on Grimm, Thanksgiving on The Vampire Diaries, and more. 

Check out the week in TV below. What's on your watchlist?

Highlights of the Week 

Gotham (FOX) Monday, 8 p.m. - "Harvey Dent" 

This week one of Gotham City's most famous residents turns up on Gotham, so we thought it would be a good time to check in and see how this show is doing. Live+Same Day viewers have slipped from the more than eight million who tuned in for the series premiere, but the good news is they haven't slipped much. The show's only dropped below six million Live+Same Day viewers once this season, and seems to be holding comfortably around the 6.5 million viewers range for the moment. Those numbers are pretty solid for a competitive Monday night, enough to keep the series in the Top 25 Broadcast Shows in the 18-49 demographic, but the real headline when it comes to Gotham's success might be its Live+7 scores. The most recent Live+7 numbers we have (from late October) place the show in the top 5 biggest broadcast TV gainers in the 18-49 demographic. The October 20 episode picked up a very impressive 74 percent increase in 18-49 demographic viewers, taking its total ratings score up from a 2.3 to a 4.0. The same episode was ultimately watched by more than 10 million viewers. So, even if they're not watching on Monday night, people are still very into Gotham. This week, Gordon is reassigned, Selina's on the run from assassins, and we get to know Harvey Dent. Check out a preview below.

Forever (ABC) Tuesday, 10 p.m. - "6 A.M." 

Over the past few weeks, ABC's made some key decisions about its new shows, and while series like Karen Gillan's comedy Selfie sadly didn't make the cut, the network's new fantasy-drama Forever did manage to get a full season order. Looking at the show's early performance, it's easy to see why. This series about an immortal medical examiner who helps solve crimes in New York City while also trying to unravel the secrets of his own inability to die kicked off with nearly 12 million total viewers, and so far its Live+7 numbers have never delivered fewer than eight million total viewers. That's encouraging, encouraging enough to make the network want to see how the show would do if it stretched all the way to May, but there's where Forever's problem might be: longevity. The show was off to a good start, so good that even when it started to drop the numbers still looked strong. The problem is that, almost every single week, the show has slipped again. It lost nearly two million Live+Same Day viewers between week one and week two, and another million between week two and week three. Last week's episode drew a series low 4.23 million Live+Same Day viewers, about half of the premiere's audience. As of the most recent Live+7 data available (October 21), the show has one of the biggest DVR audience increases on broadcast TV, but such increases ultimately matter less when the live audience keeps shrinking. Now, this is not to say that Forever is definitely doomed, but it just keeps dropping, and if it doesn't level off season two is hard imagine. This week, Henry investigates the murder of a jazz saxophonist's son. Check out a preview below.

The 100 (CW) Wednesday, 9 p.m. - "Human Trials" 

The 100 debuted midseason last year and ultimately outpaced fellow CW genre dramas The Tomorrow People and Star-Crossed in the battle for a second season. Now that we're a few episodes into that second season, it's time to see how the show's doing. In season one the show premiered with a solid 2.73 million viewers and ended its first year with a finale audience of 1.68 Live+Same Day viewers, while maintaining an average score of 1.1 in the key 18-49 demographic. Those numbers might sound low, but remember that CW shows just have smaller audiences compared to the rest of broadcast TV. For a show on this network, The 100's first season was strong. Now, we're on to season two, and while the viewership isn't down all that much (only one episode so far has dipped below 1.5 million in Live+Same Day), the show's position isn't secure, particularly when it comes to the demo score. The last two episodes have both earned a Live+Same Day rating of 0.5, less than half of season one's average. That doesn't doom the show, and we could still see an uptick in the weeks ahead (particularly with a big DVR boost), but keep in mind that the network has very limited primetime space, other shows like The Flash are far outpacing The 100, and new genre shows like iZombie are right around the corner. The 100 is not doomed, but its situation is becoming a bit precarious. This week, Jasper takes part in a risky experiment and Kane heads off to make peace with the Grounders. Check out a preview below.

Constantine Marathon (Syfy) Thursday, 7 p.m. 

Marathon alert! - So, you're curious about Constantine, but you haven't put any of the episodes on your DVR and you don't want to go hunt them down online, or maybe you just missed an episode or two and want to catch up. Whatever the case, you can catch all of the first four episodes of NBC's new comic book supernatural drama on Syfy this Thursday, beginning with "Non Est Asylum" at 7 p.m. EST, and concluding with "A Feast of Friends" at 10 p.m. EST. If you watch them all, you'll be all ready for the fifth episode when it hits NBC Friday night.

Grimm (NBC) Friday, 9 p.m. - "Cry Luison"  

Now that we're a few episodes into Grimm's fourth season, it's time for a little ratings check-in. The show is notable for thriving on Friday nights, where many shows seem to go to die, so much so that its third season audience actually topped its second season audience. So, did season four mark more growth? Well, not really, but it does seem to mark consistency. The fourth season premiere pulled in 5.28 million viewers in Live+Same Day, nearly one million less than the season three premiere, but all four of the episodes that have aired so far have managed to stay around the 4.5 to five million mark, just like much of season three did. Plus, early DVR numbers for season four look good. The season premiere saw a 53 percent increase in total viewers for Live+Same Day, taking that episode's total audience up to more than eight million. On the ratings side of things, the premiere's 18-49 score jumped a full point in Live+Same Day, from 1.4 to 2.4. Both increases were good enough to place Grimm among the 25 biggest Live+Same Day gainers on broadcast TV. Now, we'll just have to see if the show can keep it up. This week, Nick and Hank investigate a talking wolf, and Nick and Juliette wonder if it's worth sacrificing a normal life to get Nick's Grimm powers back. Check out a preview below.

Monday, November 17

The Originals (CW) 8 p.m. - "Chasing the Devil's Tail"

Klaus searches for an antidote when he discovers Elijah has been afflicted by Esther's magic; Hayley teams up with Klaus, Marcel, Cami and Josh in an attempt to take down Vincent; Vincent and Kaleb reconsider their strategies; Kaleb lets Davina in on some secrets from his past and brings her to a place he frequented in 1914.

Gotham (FOX) 8 p.m. - "Harvey Dent" 

Read more in our Highlights section above.

Sleepy Hollow (FOX) 9 p.m. - "Mama"

A series of strange deaths at Tarrytown Psych leads to a shocking discovery of the spirit involved.

Star Wars Rebels (Disney XD) 9 p.m. - "Empire Day"

A refugee of the Empire seeks help from the Rebels to get off the planet with important Imperial information.

Scorpion (CBS) 9 p.m. - "Rogue Element"

Team Scorpion try to protect Cabe's ex-wife, after she uncovers evidence that suggests foul play in the death of a prominent congressman.

Tuesday, November 18

The Flash (CW) 8 p.m. - "The Flash Is Born"

The Flash faces a new meta-human named Tony, who can turn himself into girded steel, but Cisco comes up with a plan to take Tony down. Meanwhile, Iris gets in trouble over her blog; Eddie witnesses Tony's abilities and asks questions that Joe doesn't want answered; and Joe asks Dr. Wells to help him solve Nora Allen's murder.

Agents of S.H.I.E.L.D. (ABC) 9 p.m. - "The Things We Bury"

The team race against Hydra to uncover an ancient secret. Meanwhile, Ward abducts his brother in order to brutally reflect on their past.

Supernatural (CW) 9 p.m. - "Ask Jeeves"

Dean learns that Bobby or his next of kin have been named as a beneficiary in an heiress' will, so he convinces Sam to take a road trip with him to claim their fortune. But when they arrive, things aren't quite as they had hoped or imagined.

Forever (ABC) 10 p.m. - "6 A.M." 

Read more in our Highlights section above.

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

Reese volunteers to be an NYPD police academy instructor to keep an eye on a young officer whose suspicious actions make him question her motives. Meanwhile, Martine gets information from Samaritan and hunts a member of the team.

Wednesday, November 19

Arrow (CW) 8 p.m. - "Draw Back Your Bow"

Oliver tries to stop Arrow-obsessed serial killer Carrie Cutter, who is convinced Arrow is her one true love and will stop at nothing to get his attention. Unfortunately, her way of getting noticed is to kill people. Meanwhile, Ray asks Felicity to be his date for a work dinner with some important clients; and Thea auditions new DJs for Verdant and meets a brash DJ with whom she immediately clashes.

The 100 (CW) 9 p.m. - "Human Trials" 

Read more in our Highlights section above.

American Horror Story: Freak Show (FX) 10 p.m. - "Test of Strength"

The women rally against Dell. Meanwhile, Jimmy has a strange encounter with Dandy.

The Almighty Johnsons (Syfy) 11 p.m. - "A Damn Fine Woman"

Axl's night out dressed in drag turns into a more permanent gender-bending situation when he wakes up the next day to find that he has turned into a woman.

Thursday, November 20

Teen Titans Go! (TOON) 6 p.m. - "Road Trip"

When Cyborn fixes the T-car, the team heads out on a road trip.

Steven Universe (TOON) 6:45 p.m. - "Watermelon Steven"

Steven grows a patch of watermelons and discovers a new power.

Constantine marathon (Syfy) 7 p.m. 

Read more in our Highlights section above.

The Vampire Diaries (CW) 8 p.m. - "Fade Into You"

Caroline and Elena host Friendsgiving at the dorm and receive news about the Gemini Coven; Tyler tries to help Liv after she and Luke reveal some disturbing information about their witch lineage and the impending plans their coven has for them; Jo reveals some painful details about her past; and Kai makes a dangerous discovery that brings him one step closer to his release.

The Almighty Johnsons (Syfy) 11 p.m. - "Folkmoot"

A vengeful Colin sets out to kill Ty; a folkmoot is called by Axl to determine who's responsible for Eva's death; and Michele helps find a date for Zeb.

Friday, November 21

Haven (Syfy) 7 p.m. - "Reflections"

Duke's roiling troubles and a new threat to Audrey leave the pair with no alternative but to turn to potentially dangerous allies for help.

Grimm (NBC) 9 p.m. - "Cry Luison" 

Read more in our Highlights section above.

Constantine (NBC) 10 p.m. - "Danse Vaudou"

Constantine's unusual knowledge of a string of crimes gets him noticed in a bad way by a detective in New Orleans; at the same time, he forms an unholy alliance with Papa Midnite to deal with a deadly threat involving a voodoo ritual used to communicate with departed loved ones.

Z Nation (Syfy) 10 p.m. - "Sisters of Mercy"

The two groups of survivors reunite in Utah, where they come upon an all-female commune that seems like paradise—that is, until someone ends up dead.

Saturday, November 22

Atlantis (BBC America) 9 p.m. - "A New Dawn: Part Two"

Pasiphae lays siege to Atlantis and without the Palladium to protect it, the city looks set to fall. The last remaining hope rests with Jason, Hercules and Pythagoras, but far from home they are fighting a desperate battle of their own. As the conflict reaches its thrilling climax, nothing could have prepared Hercules for what he discovers – it throws into doubt everything he once knew to be true and is set to change the course of the future forever.

Sunday, November 23

The Walking Dead (AMC) 9 p.m. - "Crossed"

A rescue mission while attempting to hold down the church leaves the group spread thin.

(Episode synopses via TV Guide)

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