Magnus has pursued Adam Worth back to 1898 London to stop him from altering and quite possibly completely destroying the future. As she battles to stop Worth, stay hidden from her past-self, and avoid taking any action that might change the events of history, Magnus must also figure out how to get back to her own present day timeline.
It’s Halloween at Webster High School and it’s Chyna Parks’ first day in the Mutant Program, where monsters go to school with normal high school students. Chyna is Medusa so she fits right in with her new Mutant Program friends: Olive, a mad scientist, Fletcher, a vampire and Angus, a zombie. However, Lexi and the normal kids are terrified of the mutants, so Gibson pairs everybody off to help prepare for the Halloween dance.
As the family tries to get rid of Auntie Angela, another guest comes to stay.
School teachers and old friends, Ben Gowans, Jason Cox and Clay Craig embark on a 'guy's trip' to the remote wilderness of Utah. Ben has talked his friends into canyoneering through some of the states most beautiful slot canyons. But after taking a wrong turn the friends quickly find that they are in way over their heads. With no way out, Ben decides to climb 60ft up and out of the canyon. As he's nearing the top disaster strikes - the rock he's holding onto snaps and he freefalls back down the canyon. Severely injured and unable to move Ben's life rests in the hands of his friends.
Businessman and entrepreneur Dewey Gaedcke decides to check out the spectacular Kilauea Volcano, driving down a secluded local road, before hiking through the dark to a viewing spot. But in the dead of night, becomes disorientated - in the heart of a 330,000-acre national park, covered with deep craters, steaming volcanic vents and crusty lava fields. Dewey is faced with a five day battle to live in this arid, lunar landscape.
It's Halloween night and the kids encounter a strange boy named Russell who is convinced his house is haunted. Meanwhile, Dr. Doofenshmirtz's disdain for grass causes him to invent a "mind-transfer-inator" enabling him to merge minds with a cow and destroy all the grass in the Tri-State Area. Unfortunately, his plan backfires and he transforms into a scary "were-cow" that wreaks havoc any time there is a full moon. It's now up to Agent P to stop him and save Danville.
When the body of a beautiful young woman is found in a stolen Ferrari, the investigation leads to a family of car thieves, but the CSIs must find the murderer before the rest of the family meets the same fate.
DC Templeton's body is discovered, and Annie becomes convinced that the murder is connected to that of Lucy Payne. The suspect in the Daniels murder case is cleared, so DCI Banks must establish how the real murderer was able to avoid detection.
In the wilds of Africa, sometimes sheer numbers can decide who lives and dies. One African river is set to boiling with scales as crocodiles join forces to tear apart their prey.
A global cataclysm, caused by a fatal accident in Geneva (Switzerland) during the implementation of the particle accelerator will lead to the crew and students of the school-ship Polar Star to live the greatest adventure of their lives. Isolated and aware that we only have each other, the ship will become their only home.
It's Hector's 40th birthday and friends and family gather at his house for a BBQ. But in amongst the celebrations one of the guests slaps a child that is not his own. No-one can see it at the time but this single act begins to unravel the social fabric which once linked them all together.
The boys visit Vinny's family in Sicily, while the girls head to Tuscany for a wine tour. Later, Snooki learns the truth about her and Vinny's hookup, and she decides to come clean to Jionni.
Cassie looks up an old friend of her mother's named Heather Barnes and discovers she has been in a catatonic state since the night of the fire 16 years ago. Feeling guilty that her mother and her Circle may have had something to do with Heather's current state, Cassie tells Diana that she wants to use magic to help Heather. Diana refuses to help, but Faye is more than happy to conjure up a spell - for a price.
Leslie's book about Pawnee comes out just in time for her campaign. Ann tries to bond with Ron and April.
A stampede at a comic book convention leads to an influx of colorful characters in the ER; Mark continues to make life difficult for Jackson; Ben returns and realizes Bailey has moved on.
Reese goes undercover to find the threat surrounding the next person on Finch's list: a young army veteran named Joey Durban.
The study group struggles to incorporate a fellow classmate while working on a project for Professor Kane's class.
Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
When the son of a former client from Jane's days as a psychic is kidnapped, Jane and the CBI team are asked to help find him. Meanwhile, Jane butts heads with his former client's new "spiritual advisor."
Still in Chicago, Klaus uses Gloria, a witch he knew long ago, to help him track down missing information that will explain why his plan isn’t working. Gloria’s spells reveal intriguing glimpses of the truth, but she soon realizes she needs Stefan’s knowledge to complete the puzzle. When Stefan suddenly finds himself in danger, help comes from a surprising ally. Back in Mystic Falls, a frustrating new enemy pushes Damon over the brink and he lashes out in a way that will have lasting consequences. Caroline struggles with her own emotional issues, even as she tries to help Elena face her feelings. Jeremy makes a brief but disturbing breakthrough with one of his ghostly visitors, leaving him more confused than ever. Finally, Bonnie has a strange encounter that will affect everyone.