The BAU must determine what caused a disturbed man to murder several people at a pharmacy before he harms anyone else.

Odd things occur for Allison, starting with her new sensitivity to light and the fact that the sunglasses she wears shows mysterious numbers that can tie into people’s life expectancies….

Samples of a lethal viral disease vanish, a dire development that pushes Allison to tap into her extrasensory ability to foil a possible large-scale bioterrorism attack. Meanwhile, Scanlon prepares to…

When Allison’s car is wrecked, the SUV she rents turns out to have some unusual features, including a satellite radio that allows her to hear other people’s conversations.

Allison fears the worst about Ariel’s new boyfriend when she suspects him of murdering a man. Also, Bridgette posts embarrassing videos of a man on the Internet and gets into…

When Ariel acts strangely, Allison becomes worried that her daughter might be possessed with the spirit of a murdered stripper who wants revenge on her killer.

When Allison’s friend with cancer suddenly dies she suspects a hospital employee may be at fault. Meanwhile, Bridgette writes a story that closely follows what later happens at Joe’s job…

Allison believes she is having after effects from her recent brain surgery after experiencing strange symbols as visions. However, as the story plays out, it seems the symbols may be…

On the 100th episode of Medium, an infant is kidnapped and Allison investigates the disappearance. But when she becomes too obsessed with the infant, Joe starts to get worried about…

The film “Night of the Living Dead” gets Allison nightmares where scenes from the movie are put in her mind. It results in her getting cuts and bite marks and…

Allison and her family deal with the outcome of her brain surgery and its possible lasting effects. Also, a local television station owner asks Devalos and Scanlon to look into…

Allison struggles with her decision to switch jobs. When continues to have visions about a serial killer she is forced to choose between honoring the contract with her new job…

After falling into a coma during an investigation, Allison’s spirit finds it’s way into the body of a man named Todd Emory. Joe and the kids have to adjust to…

Allison turns to Cynthia Keener (who is now in jail) when she starts dreaming of a former kidnap victim who Cynthia had once rescued.

While Allison is coping with Joe’s job relocation to San Diego, she dreams about and then subsequently meets a bank teller named Mrs. Boddicker who predicted a robbery at her…

Allison finds out she has a brain tumor and must get surgery to get rid of it, but then has a dream that the surgery will take away her dreams…

Allison and Devalos are shot and Allison awakens in 2004, five years earlier and now nine months pregnant with her third child, Marie. Allison’s dreams informs her about an innocent…

Allison comes face-to-face with her stalker from her dreams. He believes he is doing God’s work and must stop her. Allison and her family must remain under house arrest until…

Allison’s possessed stalker, Lucas Harvey, continues to torment her by infiltrating her dreams and causing her to be less than reliable to Devalos and Scanlon during an investigation of serial…

Allison leaves her job at the D.A.’s office after she’s recruited to work for the Lydecker Corporation by another psychic who works there. While enjoying her new job, Allison still…

While at her new job at the Lydecker Corporation, Allison shares the dreams she’s been having of the serial killer in Phoenix with Devalos and Scanlon. Her new boss finds…

Allison dreams of a ghost who was a witness to several murders. Meanwhile, Ariel has a strange reaction to an assignment in health class.

While working on a 17 year-old-crime, Allison exhibits unusual behavior that may be pivotal in solving the case, but at the same time puts her family at risk. Meanwhile, Joe’s…

Allison wakes up under a freeway overpass, not knowing where she is or how she got there. Her lack of recent memory causes her to start thinking she may have…

Allison is asked to help find a missing daughter and her visions seem to incriminate her father, but Allison believes this is wrong after a chat with the woman’s mother….

A horrific apocalyptic dream has Allison shaken, as does the earthquake which follows. Convinced that the end is near, Allison seeks wisdom from a survival guru and purchasing provisions. Meanwhile,…

Allison is visited once again by the ghost of Agent Cooper, who tries to help her figure out who the real murderer is in a confusing case. Allison begins to…

Allison has a dream about a game show that can detect lies, and upon waking up she hears a buzzer in her head whenever someone tells her a lie. Allison’s…

Allison investigates when a brother and sister report the disappearance of their mother. Meanwhile, Joe’s sister moves in with Joe and Allison after walking out on her husband Ryan, but…

Delavos receives help from Allison when he investigates the murder of his friends sister. But the case is taken into an unexpected direction when when Allison’s visions involves the friend’s…

Owen recruits Dr. Teddy Altman, a former Iraqi veteran, as the new cardiothoracic surgeon. Cristina questions her abilities in the E.R. and relationship with Owen. Izzie returns to Seattle Grace…

As Thanksgiving, Christmas and New Year’s pass, Miranda gets a visit from her father, William who disapproves of her choices in life. Mark and Lexie cope with an arrival of…

When Meredith and Lexie’s father, Thatcher, returns to the hospital with a failed liver, it’s up to Meredith to save his life. Meanwhile, Izzie empathizes with a patient riddled with…

The residents of Seattle Grace and Mercy West vie for surgeries and their careers as day one of the hospital merger begins. Meanwhile, Arizona stands by an enraged Callie when…

After a burn victim unexpectedly dies in the midst of a chaotic ER, the Chief and board member Jennings interrogate the residents to find the culprit, as all the Mercy…

When Isaac has an inoperable tumor wrapped around his spine, he wants Derek to do the impossible. Derek tests the Chief’s authority when Richard objects to moving forward with the…

A generous 25 million donation is offered to Seattle Grace by the parents of Arizonas 10-year-old patient, she finds herself in a conflict of interest when his condition worsens. Cristina…

The hospital staff is left to deal with the aftermath of George’s passing. Hitting the staff hard, they all find unique ways to get through the various stages of grief….

Everyone is struggling after losing one of their own and are turning to any distraction they can find. Meredith and Derek seem to be consummating their marriage anywhere and everywhere,…

Several weeks after her near-death experience, a recovering Izzie returns to work. Meanwhile, nervous that there will be layoffs in the hospital in the wake of an announcement from the…