
(SeaPRwire) – Following a lengthy hiatus—a decade or fifteen years, depending on one’s view of the 1996 TV movie—Doctor Who‘s 2005 revival appeared to streamline its canon for a new audience. The eponymous Time Lord was now presented as the last of his kind, with a murky, complex past event potentially having altered the established timeline. Although the relaunch’s “Season 1” included numerous nods to the classic 1963-1989 series, a key uncertainty lingered: had the past Time Wars overwritten the Doctor’s history on Earth? While debates about modern canon persist, especially regarding the Toymaker’s 2023 schemes, a single Season 2 episode in 2006 made a definitive statement: the past was real, and the Doctor’s classic-era companions still existed within it.
In the episode “School Reunion,” which aired on April 29, 2006, the Doctor (David Tennant) and Rose (Billie Piper) tackled a classic aliens-infiltrating-a-school storyline. With Anthony Head from Buffy playing the villainous Mr. Finch, the plot seems, on the surface, like one of the less memorable early Tennant tales; its monster and concept are as unremarkable as “The Idiot’s Lantern,” and its production now seems more dated than 1970s and ’80s episodes. However, the episode’s enduring appeal has nothing to do with its sci-fi menace. “School Reunion” is a beloved, great Who episode because it marked the return of Elisabeth Sladen as Sarah Jane Smith, former companion to both the 3rd (Jon Pertwee) and 4th (Tom Baker) Doctors. Like the Doctor and Rose, Sarah Jane is probing the suspicious school for extraterrestrial clues, mirroring her original role as an investigative journalist in “The Time Warrior.”
The genius of reintroducing Sarah Jane to the Who mythology is dual. Firstly, it solidly confirms that the modern series shares a direct continuity with the classic show, and that the Doctor retains all memories from prior incarnations, including the 1970s era. More poignantly and cleverly, the episode also recontextualizes the Doctor for viewers acclimating to his younger, flirtatious persona. The Tenth Doctor may appear youthful and animated, but he is ancient, a fact embodied by a middle-aged woman who, like Rose, was once a young traveler at his side and witnessed a regeneration.
Sladen was 60 when “School Reunion” broadcast, a notable age considering David Tennant is 55 in 2026. In other words, she wasn’t that old in the episode, but with Rose Tyler and Mickey Smith (Noel Clarke) written as 19 and roughly 24, Sarah Jane faced being supplanted by people the age she was when she first journeyed with the Doctor. In a superb scene, Sarah Jane and Rose initially clash over their shared history before discovering a mutual understanding. The audience recognizes that, in reality, the Doctor’s habit of exchanging companions for younger ones would be unsettling, but Sladen and Piper’s performance reminds us that we, too, are enamored with the Doctor, which is why we overlook it.

Sladen’s comeback as Sarah Jane Smith extended beyond this single episode. She later reappeared in the expansive fourth-season two-parter “The Stolen Earth”/”Journey’s End,” and led her own spinoff, The Sarah Jane Adventures (a live-action, somewhat YA equivalent to Star Trek: Lower Decks within the Whoniverse). Overall, her return anchored modern Who in its nostalgic foundations while deepening the series’ emotional weight. Sladen’s skilled acting in “School Reunion” lends a heightened realism to Tennant and Piper’s performances—a surprising feat given the show’s inherent silliness, but one that becomes clear upon revisiting the episode.
What might have been an unmemorable story about mind-siphoning aliens is transformed into a tale of heartache, growing older, and seeking purpose after life’s most extraordinary chapter ends. Sarah Jane demonstrates that one can move forward without surrendering the past, a remarkably potent message in sci-fi and fantasy often dominated by the young (or the young-looking). Sladen’s later Whoniverse appearances before her 2011 passing are all excellent. Yet among all her performances, including those with the 3rd and 4th Doctors, “School Reunion” may be her finest. Like the Doctor, Sarah Jane inhabits both past and present simultaneously, and for a story not centered on the Time Lord, Doctor Who has seldom been so moving or tender.
Doctor Who (2005-2022) is not currently available on major streaming platforms. Episodes can be rented via Apple TV, Prime Video, and other services. Classic episodes featuring Sarah Jane Smith, beginning with Season 11 (1973/1974), are streaming on Tubi, Pluto TV, and BritBox.
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