A teenage girl has been enjoying her life of gymnastics and nature, when she suddenly receives a scratch on her hand. The problem seems minor, but the scratch fails to heal and becomes several lesions, which also spread to her eyes. The infection appears to be caused by the MRSA bacteria, but it turns out that it is actually caused by Mycobacterium marinum. A middle-aged man suddenly feels as if he's choking and coughs hard. Initially, it appears to be a case of pneumonia, but after a surgery to fix his spine, he develops stabbing pain in his throat. The coughing returns, and it turns out that he did, indeed, swallow a can tab. A young man suddenly starts complaining of itchiness in his body. He develops a headache, nausea, body aches, and an inability to urinate. Tests show that the man has developed meningitis from rat lungworm disease.
When a knife-wielding attacker dressed as Baron Samedi, the Spirit of Death, stabs a man in costume on Halloween, Danny enters the world of voodoo. Meanwhile, DCPI Garrett opens up to Frank about a dark secret, and Erin and Nicky take Jack and Sean trick-or-treating.
Believing in humanity and order, policewoman Akane Tsunemori obeys the ruling, computerized, precognitive Sibyl System. But when she faces a criminal mastermind who can elude this perfect system, she questions both Sibyl and herself.
The exploits of the notorious drug lord, Pablo Escobar.
Gavin is hit hard by the death of his dog Chester and, understandably distracted, accidentally leaves out a document detailing staff wages, which Leighton promptly pins up on the noticeboard.
Agent P quickly figures out there is more to Norm's odd reality show that celebrates the eventful life of his creator Dr. Doofenshmirtz, which is recreated through flashbacks and special guests.
While Audrey and Duke track down the Colorado Kid's parents, Nathan and Tommy investigate Troubled incidents involving the resurrection of dead for payment.
The Fringe team responds to recent devastating events, and a key member makes a pivotal and shocking move.
It's the first day of the new school year. Luke brings Kenny the Koala to school, but it falls out of his backpack. Ravi tries to cover for Luke and says that it's his, causing him to be made fun of. Meanwhile, it's Emma's first day of high school and she meets an interesting new friend, Rosie.
Seth MacFarlane shows his support for a man who designed a new fly trap; multi-functional child cover; food storage container; followup on a manicure system.
When Ryan tells Nikita an undercover agent has been arrested and they need to extract her from prison, Nikita questions why Division is continuing to run Percy’s old missions. Nikita, Michael and Sean attempt to stop a terrorist attack but are one man down after Alex is shot. Meanwhile, Birkhoff and Sonia continue to bicker.
When a brutal vigilante homicide is made public, it sends Portlands Wesen community into a frenzy. As Nick investigates further, he discovers a pattern similar to that of a particularly brutal line of past Grimms. Is there another Grimm in town, or is Nick dealing with a sadistic copycat Meanwhile, Captain Renard takes it upon himself to offer Juliette comfort in handling her ongoing dilemma with Nick.
Mike tries to convince Mandy to vote for Romney, but Obama supporters Kristin and Ryan disagree with his methods.
While searching for a gun, the team stumbles on a dead body at the bottom of a Central Park pond.
Sheldons relationship with Stephen Hawking is threatened over a game of Words with Friends, and Penny secretly enrolls in a class at the local college.
Sherlock tries to determine who has been killing weak and terminal patients at a hospital, making it look like they died of natural causes. Meanwhile, Sherlock learns more about Joans decision to walk away from her surgical career.
Reese must protect an investigative journalist through surreptitious means to avoid becoming part of her story.
Damon goes with Elena and Bonnie to visit Whitmore College, where Professor Shane is taking over the Occult Studies classes formerly taught by Bonnies grandmother. At a fraternity costume party, Damon takes advantage of the wild scene to give Elena a lesson in choosing a victim. Rebekahs attempt to buy Matts forgiveness falls flat, but she is intrigued by unexpected news from Klaus. When Stefan questions Klaus about Connors motives, Klaus reveals a long-ago encounter with a powerful group of vampire hunters, but its Rebekah who delivers the information that stuns Stefan.