Question: Maugrim is a captain of the secret police for the witch who froze Narnia in what event?

Context paragraphs:
Hundred-Year Winter: The Hundred-Year Winter is a time period in the fictional Narnia universe created by C.S. Lewis.  It takes place from 900–1000 Narnia time.  The White Witch Jadis cast a spell to make it Winter all year round, but never reaches Christmas.  But throughout the story, Aslan is entering Narnia and his presence weakens The White Witch, Jadis, causing Spring and Father Christmas to slowly appear.  Aslan also brings Peter, Lucy, Susan, and Edmund to Narnia to fulfill the Prophecy of The Four Thrones ("When two daughters of Eve and two sons of Adam sit together in throne at the Cair Paravel, the reign of the White Witch will be over and done.)  This would put an end to White Witch's plan and her reign and the endless winter would come to an end.  (The final days of the Hundred Year Winter occur during "The Lion, the Witch, and the Wardrobe".)

Nicolae Pleșiță: Nicolae Pleșiță (] ; April 26, 1929 – September 28, 2009) was a Romanian intelligence official and secret police investigator.  From 1980 to 1984, he led the Foreign Intelligence Service of the Securitate, the secret service of Communist Romania.  He was described by the "New York Times" and Associated Press at the time of his death as "a die-hard Communist and ruthless chief of the Securitate secret police."

Oprichnina: The oprichnina (Russian: опри́чнина , ] ) was a state policy implemented by Tsar Ivan the Terrible in Russia between 1565 and 1572.  The policy included institution of secret police, mass repressions, public executions, and confiscation of land from Russian aristocrats.  The six thousand political police were called oprichniki, and the term "oprichnina" also applies to the secret police organization, to the corresponding period of Russian history, and to the territory in which, during that period, the Tsar ruled directly and in which his oprichniki operated.

Secret police: The term secret police or covert police force refers to intelligence services or police and law enforcement agencies which engage in covert, domestic law enforcement, intelligence, and counter-intelligence operations.  The level of oversight with which they are governed varies by country and political system.  Secret police organizations are often used by totalitarian states to protect the political power of an individual dictator or an authoritarian political regime by means of systematic engagement in extrajudicial activities.  Secret police organisations are often utilised for the purposes of policing the activities of dissidents, and weakening opposition organisations.

Maugrim: Maugrim is a fictional character in the novel "The Lion, the Witch and the Wardrobe" by C. S. Lewis.  A Narnian wolf, he is Captain of the White Witch's Secret Police.  In early American editions of the book, Lewis changed the name to Fenris Ulf (a wolf from Norse mythology), but when HarperCollins took over the books they took out Lewis' revisions, and the name "Maugrim" has been used in all editions since 1994.

List of secret police organizations: This is a list of current secret police organizations.  Fictional secret police organizations and historical secret police organizations are listed on their own respective pages.

Lucy Pevensie: Lucy Pevensie is a fictional character in C. S. Lewis's "The Chronicles of Narnia" series.  She is the youngest of the four Pevensie children, and the first to find the Wardrobe entrance to Narnia in "The Lion, the Witch and the Wardrobe".  Of all the Pevensie children, Lucy is the closest to Aslan.  Also, of all the humans who have visited Narnia, Lucy is perhaps the one that believes in Narnia the most.  She is ultimately crowned Queen Lucy the Valiant, co-ruler of Narnia along with her two brothers and her sister.  Lucy is the central character of the four siblings in the novels.  Lucy is a principal character in three of the seven books ("The Lion, the Witch and the Wardrobe", "Prince Caspian", and "The Voyage of the Dawn Treader"), and a minor character in two others ("The Horse and His Boy" and "The Last Battle").

Double Seven Day scuffle: The Double Seven Day scuffle was a physical altercation on July 7 (7/7), 1963, in Saigon, South Vietnam.  The secret police of Ngô Đình Nhu—the brother of President Ngô Đình Diệm—attacked a group of journalists from the United States who were covering protests held by Buddhists on the ninth anniversary of Diệm's rise to power.  Peter Arnett of the Associated Press (AP) was punched on the nose, and the quarrel quickly ended after David Halberstam of "The New York Times", being much taller than Nhu's men, counterattacked and caused the secret police to retreat.  Arnett and his colleague, the Pulitzer Prize-winning journalist and photographer Malcolm Browne, were later accosted by police at their office and taken away for questioning on suspicion of attacking police officers.

White Witch: Jadis is the main antagonist of "The Magician's Nephew" and of "The Lion, the Witch and the Wardrobe" in C. S. Lewis's series, "The Chronicles of Narnia".  She is commonly referred to as the White Witch in "The Lion, the Witch and the Wardrobe", as she is the Witch who froze Narnia in the Hundred Years Winter.

Speed Gibson of the International Secret Police: Speed Gibson of the International Secret Police was a radio adventure series written by Virginia Cooke.  It was centered on the adventures of Speed Gibson, a fifteen-year-old pilot who, through his uncle Clint Barlow, becomes a member of the International Secret Police.  Speed was described as “a typical American boy: interested in short wave radio, aviation and most of all - The International Secret Police.”

Supporting paragraphs: Maugrim White Witch
Answer: Hundred Years Winter