Can Fringe's Walter Bishop keep the entire world from coming apart at the seams?

What are Doctor Who's creeptastic new monsters planning? Who is Fringe's mysterious bowling-alley guru? What does young Bran remember on Game of Thrones? What does Eve want with Supernatural's Sam and Dean? And which horrifying epidemic could bankrupt America?

This week's television is full of strange discoveries and shocking revelations. Prepare yourself, by reading our in-depth guide below.

Today:

There's a new Adventure Time with Finn & Jake on the Cartoon Network at 8 ("Heat Signature"), followed by a new Mad at 8:15 and a new Regular Show at 8:30. And then there's The Problem Solverz at 8:45, "The Awesome Banditz"

There's no new Chuck this week.

But at 9 PM, NBC has a new episode of The Event, "Strain."

The White House is rocked by the sudden illness of one of their own, leaving Chief of Staff Peel (guest star Roger Bart, "Desperate Housewives") and Sterling (Zeljko Ivanek) to investigate possible conspirators. Michael Buchanan (Scott Patterson) comes to the aid of Leila (Sarah Roemer), but it leaves them both at risk of Sophia's wrath. Across the globe in Russia, Sean (Jason Ritter) and Vicky (Taylor Cole) race to stop Sophia's weapon from being loaded onto a plane heading to the United States.

Do you think they'll really kill off the president? That would actually be pretty gutsy.

Also at 9 PM, there's a new Stargate Universe on Syfy, "Epilogue":

Returning the settlers to their home planet Novus, the Destiny crew discover the planet has been abandoned and on the verge of seismic destruction.

And then at 10 PM, Sanctuary debuts in its new time slot, with "One Night."

A dinner date goes awry for Will and Abby when they are abducted at gunpoint on their way to a restaurant. Magnus puts a halt to the team's rescue operation upon determining the identity of their abductors, leaving Will and Abby's survival in their own hands.

Tuesday:

As usual since V and No Ordinary Family went away, Tuesday is a wasteland. But not to worry — National Geographic Explorer has a hard-hitting look at "The Angel Effect!" No, it's not people debating whether the Buffy the Vampire Slayer spinoff was as good as the original show — it's about a real-life brush with the supernatural:

A 9/11 survivor, an astronaut and a blue hole diver - all survived dramatically different traumatic events only to tell strikingly similar stories: each felt a mysterious presence that guided them to safety in their time of greatest peril. But what were these strange presences? Can they be explained? The devout call them guardian angels or divine encounters - others encounter a kind stranger. Could they have been angels? Phantoms? Or were their minds just playing tricks on them? EXPLORER delves deep inside this phenomenon to break down the barrier between science and the supernatural. When faced with life and death, the brain flips an "angel switch," and help arrives-at least for some. Dubbed the "Third Man Factor," hundreds have reported this mysterious phenomenon - and now, science is taking a closer look, zeroing in on the location and the mechanism in the brain they believe may be responsible for these visions.

That's on National Geographic at 10 PM.

Wednesday:

At 9 PM, Discovery Channel has another new Mythbusters, "Bubble Trouble."

Adam and Jamie test a tall tale that it's impossible to stay afloat in bubbly water, while Kari, Tory and Grant find out if an arrow packed with explosives can split a tree in two.

At 11 PM, SOAPNet has the third season finale of Being Erica.

Thursday:

It's a geek sitcom showdown! NBC has a new Community at 8 PM, at the same time as a new Big Bang Theory on CBS. On Community, the anthropology class gathers for their final exam, and Shirley goes into labor. On Big Bang Theory, Priya uses her lawyer skills to pick apart the roommate agreement, while the girls take Sheldon dancing.

But don't forget — there's also a new Vampire Diaries on The CW at 8 PM, "The Last Day."

Damon (Ian Somerhalder) is willing to go to extraordinary lengths to prevent Elena (Nina Dobrev) from being a victim of Klaus' (guest star Joseph Morgan) plan to break the curse. Damon's actions put him at terrible odds with Stefan (Paul Wesley) and the tension that started brewing between the brothers over their differing opinions of how to help save Elena's life blows up into full-scale conflict. Tyler (Michael Trevino) returns to Mystic Falls after receiving a disturbing phone call. With the full moon marking the arrival of the sacrifice ritual, Stefan and Elena spend a romantic day together — afraid it might be their last.

And for those of us who don't care if Elena lives or dies, thank goodness Alaric is still with us!

And then there's also a new Nikita on The CW at 9 PM, "Glass Houses."

Friday:

The Cartoon Network once again has a full slate of programs, starting at 6:30 PM with Batman: The Brave and the Bold, "Night of the Batmen!".

Green Arrow, Plastic Man, Aquaman, and Captain Marvel must all don the Caped Crusader's cowl when Batman is injured and the heroes must protect Gotham City during his recuperation.

Then at 7:30, there's a new Ben 10: Ultimate Alien, "Prisoner #775 is Missing." That's followed by a new Generator Rex at 8 PM, "Written in Sand."

Also at 8 PM, there's a new Smallville on The CW, "Dominion."

Tess (Cassidy Freeman) learns that General Slade was found unconscious on a street corner, proof that someone has gained access to the Phantom Zone's escape portal and sent him back. Clark (Tom Welling) decides to return to the exiled land to make sure other phantoms are not fleeing and is furious when Oliver (Justin Hartley) tricks Clark into taking him along. With Clark's powers gone, the two are immediately captured by the Zoners who take them to their new leader, Zod (Callum Blue), who is thirsting for revenge on Clark for banishing him to this Kryptonian jail. Meanwhile, Lois (Erica Durance) learns Clark trusted Tess with a secret, but didn't tell Lois.

And then at 9 PM, Fringe keeps raising the transdimensional stakes on Fox, with "The Last Sam Weiss." And it looks like that bowling alley guy really does know a lot more than he was letting on about. Hopefully his secrets have nothing to do with the importance of the correct Olivia seducing Peter or anything like that. Here's an interesting video about Sam, which may provide some hints. Or not.

There's also a new Supernatural at 9 PM on The CW, "Mommy Dearest."

Sam (Jared Padalecki), Dean (Jensen Ackles), Bobby (Jim Beaver) and Castiel (Misha Collins) track Eve (guest star Julia Maxwell) to a small town in Oregon. The guys discover the townspeople have been converted to demons, but surprisingly, they all appear to be dying. When they finally do meet Eve, she decides to torture the brothers by bringing back their mother, Mary Winchester (guest star Samantha Smith), as a demon.

At 10 PM, Camelot is back on Starz, with episode 5. Here's a promo.

Also, the first season finale of the crowd-sourced TV show Bar Karma airs on CurrentTV at 10 PM.

Saturday:

The Hub is having its random grab-bag of Transformers and G.I. Joe cartoons as usual from 7 to 9 PM.

At 8:30 PM, George Takei once again plays the holographic sensei in Supah Ninjas on Nickelodeon. In "Checkmate," the Ninjas go after the menacing Checkmate, following the disappearance of an undercover cop.

At 9 PM, BBC America has the second episode Doctor Who season six, "The Day of the Moon." Here's the official description:

The Doctor is locked in the perfect prison while Amy, Rory and River Song are being hunted down across America by the FBI, as the time-travelling adventure series continues. With the help of new friend and FBI-insider Canton Everett Delaware the Third, our heroes are reunited to share their discoveries, if not their memories. The world is occupied by an alien force that controls humanity through post-hypnotic suggestion, and no one can be trusted. Aided by President Nixon and Neil Armstrong's foot, the Doctor must mount a revolution to drive out the enemy and rescue the missing little girl. No one knows why they took her. Or why they have kidnapped Amy Pond...

And above is a clip.

Syfy, which decided to go up against the season opener of Doctor Who with an original movie last week, has nothing new for anyone who's decided that Doctor Who's not their cup of tea after all. They're showing all the Underworld films this evening.

Sunday:

Fox has its usual animated bloc from 8 to 10, with new episodes of The Simpsons, Cleveland Show, Family Guy and American Dad. The latter three shows have a crossover, in which "a storm hits the towns of Stoolbend, Quahog and Langley Falls."

Also at 8 PM, CNN has its first Larry King special, Unthinkable: The Alzheimer's Experience, in which scientists explain what causes Alzheimer's Disease, and commentators explore the idea that this will be "the disease of the 21st century." Says CNN:

King will be joined by people who have been touched by Alzheimer's disease and will include interviews with former First Lady Laura Bush and California's former First Lady and Alzheimer's activist Maria Shriver; actors Seth Rogen, and Angie Dickinson; TV host Leeza Gibbons; football star Terrell Owens and son of President Ronald Reagan, Ron Reagan. Neurosurgeon and CNN chief medical correspondent, Dr. Sanjay Gupta will explain what Alzheimer's is and how this disease affects the human brain.

Seth Rogen, talks to King about supporting his fiancée and her family as they deal with her mom's early diagnosis at the age of fifty-five. He wants the world to know this is a young person's problem too, "More and more people in our generation are gonna have to deal with it," Rogen said....

In addition to visiting the Mayo Clinic, Larry King will visit the cutting-edge Lou Ruvo Center for Brain Health at the Cleveland Clinic in Las Vegas, and he will be joined by Ron Reagan. While there, one of them will take a brain scan that will indicate if he is at risk for Alzheimer's or other memory disorders, and one will opt out. Tune in and as they will share the results with the audience and talk to Dr. Jeffrey Cummings, Director, ClevelandClinic Lou Ruvo Center for Brain Health and Larry Ruvo, philanthropist and visionary, to see how doctors are treating patients and what people can do to diminish their risk for Alzheimer's. Dr. Ronald Petersen, Director, Mayo Clinic Alzheimer's Disease Research Center, who treated President Reagan warned, "If we don't do something about Alzheimer's disease right now, Alzheimer's disease in and of itself may bankrupt the healthcare system."

So it's a pretty intense blend of brain science and futurism — but if you've been hoping to remain in denial about this particular nightmare, then on no account tune into CNN at 8 PM.

HBO's Game of Thrones is back at 9 PM, with episode three, "Lord Snow."

Arriving at King's Landing after his long journey, Ned (Sean Bean) is shocked to learn of the Crown's profligacy from his new advisors. At Castle Black, Jon Snow (Kit Harington) impresses Tyrion (Peter Dinklage) at the expense of greener recruits. Suspicious that the Lannisters had a hand in Bran's fall, Catelyn (Michelle Fairey) covertly follows her husband to King's Landing, where she is intercepted by Petyr Baelish (Aidan Gillen), aka "Littlefinger," a shrewd longtime ally and brothel owner. Cersei (Lena Headey) and Jaime (Nikolaj Coster-Waldau) ponder the implications of Bran's (Isaac Hempstead-Wright) recovery; Arya (Maisie Williams) studies swordsmanship. On the road to Vaes Dothrak, Daenerys (Emilia Clarke) finds herself at odds with Viserys (Harry Lloyd).

The Science Channel is still re-showing all the original episodes of Joss Whedon's Firefly, with special segments featuring physicist Michio Kaku, at 9 PM and 10 PM.

And then at midnight, there's a new Superjail! on Cartoon Network's Adult Swim, "Gay Wedding."

Sources: Futon Critic, TV Guide, and various TV studio press releases.