With un'eperienza in the navy and an impressive dossier of solved cases, Olivia Dunham was one of the rising stars of 'FBI. But now, horrified by the tragedy of Flight 627 and stunned by the betrayal of someone she trusted blindly, Olivia can not return to the traditional world of the investigation. Ever more deeply enmeshed in the dangerous world of fringe science, Olivia realizes that science and technology have already gone beyond our fondest dreams ... or nightmares. Hired by Phillip Broyles, Homeland Security agent, Olivia puts together a task force to investigate on the diagram - a mysterious sequence of unexplained phenomena, caused by someone who is carrying out experiments on the whole world. With the help of the brilliant but insane Walter Bishop and his strange son Peter tries to deliver high-tech criminals to justice and eliminate threats to national security.

Neglected son of a real mad scientist, Peter has been anything but idyllic childhood. After the internment of his father, he tried to be different from him as he could. Although he has not finished college, he passed for a few months to a professor of chemistry. Intuitive mathematician who has nevertheless lost his shirt and something more in casinos across Europe and America ... a jack-of-all-trades who has done all the jobs imaginable, from bouncer to biochemical engineer. Dissatisfaction Peter took him around the world, unwilling to spend time in the same place. But its use as a civilian consultant FBI, in order to control the mentally ill father, could force him against his will to take root. Despite his best intentions, Peter is to follow the dangerous footsteps of his father, while working with a government agency in possession of a dossier containing information about his possible criminal activity.

Acclaimed in the past as one of the brightest scientific minds of his generation, Dr. Walter Bishop understands better than anyone the dangers and lures of fringe science. The innovative studies with lab partner William Bell (studies ranging from quantum physics to genetic engineering) led him to enter into a secret relationship with the U.S. government to continue its innovative research projects from the point of scientific (but more questionable from an ethical point of view. But that was before the crash of 1991, which sent an assistant to the cemetery for Walter, St. Claire and himself to the hospital for the mentally ill. Seventeen years later , Walter is back in the limelight. Hired FBI special agent Olivia Dunham and under the supervision of his son Peter, almost a stranger to him, the doctor provides the engineering and technological magic required to investigate on the diagram that are often rise at an alarming rate in the experiments of the same Walter. Unfortunately, his memory shattered fragments can only tell the real story.

The Homeland Security Agent Phillip Broyles leads the official investigation of the United States on the diagram. Master at juggling in the power games, could easily emerge from the ranks of the government even without inflating the pens. But Broyles prefers to go beyond the limits and test boundaries. When inexplicable events begin to occur around the world, Phillip finds his mission in the search for the cause of these episodes. Currently has put up a special investigation team headed by the agent Dunham with the help of father-son team format by Walter and Peter Bishop. Leading this team will test his political skills and make him a target of those who do not want the truth to be revealed. Broyles's goal: to discover who or what is behind these events and prevent him from becoming a spiral out of control.

Friend and colleague Olivia, is the support for both regard the investigations, both in private life. Extremely loyal and faithful, is responsible for all research and investigations relating to the bureaucratic agent Dunham, allowing it to proceed quickly and smoothly.

Olivia partners in work and in life, she shares with the very deep feelings. Presented initially as a man of integrity beyond reproach and an agent, a traitor is revealed later, tied to the man who caused the deaths of passengers of the flight. Saved from infection through the work of Olivia, Peter and Walter, die anyway in the course of a chase. Many mysteries remain, however, linked to the figure of John and his motives, mysteries that hopefully will be explained during the episodes.

The Junior Agent Astrid Farnsworth was assigned to the Fringe Division as an assistant to Agent Olivia Dunham. Shortly after, his job required that also assist the Dr. Walter Bishop in his laboratory while he was investigating and researching cases. Can be a Junior Agent Astrid, but his impressive background makes it an essential addition to the Fringe Division. It 's degree in linguistics, has a master's degree in Computer Science and studied cryptology all before joining the FBI. Astrid also speaks five languages. The extensive background of Astrid helped the team to solve cases from interpreting Latin to help reprogram homing pigeons to provide them with GPS receivers. It also has the thankless task of looking, clean and often entertain Walter Bishop, who is almost impossible to remember the name of Farnsworth.

Ms. Sharp has been working for Massive Dynamic for 16 years. One of the first employees of Dr. William Bell, Nina Sharp has come to become the public face of this global society. Once promoted to executive service in 2004, has guided the expansion of Massive Dynamic in entertainment, education and environmental management. When he lost his right arm due to cancer, Dr. Bell himself designed a robotic substitute, making Nina the living representation of the technology of Massive Dynamic.

The Observer is a mysterious bald man with no eyebrows that appears on all the crime scenes in some way related to the Scheme.
Several years ago, the Observer saved Walter and Peter from drowning, but in return demanded by Walter a promise: if one day he would need the scientist, they would help him forcibly.
Little else is known about this character (apart from that loves spicy flavors and writing in a language at least abstruse), which still remains shrouded in a mystery ...

William Bell:

Head of Massive Dynamic, has participated in studies conducted by Walter Bishop thirty years before. For now, his character is shrouded in mystery and has not yet revealed. Even more mysterious are his intentions and whether his actions and his discoveries are pointing to the good or evil.

David Robert Jones is a criminal with a high risk of biotechnology and genetic weapons smuggling. Olivia goes to see him in Wissenschaft Prison in Frankfurt (where it is locked up for stealing state secrets to the German government) because hopefully that will help save Mitchell Loeb, an FBI agent. In the tenth episode Loeb is just to help him escape from his prison teletrasportandolo in the United States.

Loeb is an FBI agent to whom the Fringe Division tries to save his life during the seventh episode of the first series. Soon we discover that the man is actually a double agent, who works for Jones and ZFT.

Rachel and Ella:

Rachel is the sister of Olivia. He arrived in Boston with his daughter Ella after the failure of her marriage to Greg and asked his sister to stop for a while 'from her. Olivia welcomes its proposal, partly because of the great affection that binds to the granddaughter.

Sandford Harris is a prominent member of the Department of Homeland Security. Is sent to Boston to evaluate the performance of the Fringe Division, but it seems clear from the outset that he intended to take the opportunity to take revenge on Olivia, who had condemned for sexual harassment. What led him to clash with Broyles, who comes to risk his career to allow her to undergo continuing to seek the truth.

Nick Lane is one of the children of Cortexiphan. During the experiments was paired with Olivia, with whom he developed a kind of telepathic connection. His power is to convey his feelings to those around him.