explains to Sarah Jane that The Trickster is a powerful member of the extra-dimensional so-called Pantheon of Discord. The serial clarifies that Sarah Jane owes her independent wealth to her Aunt Lavina's will. In 'Sarah-lite' two-parter Mona Lisa's Revenge, Sarah Jane and Luke have their first argument as he progresses into his teenage years; they argue about the cleanliness of Luke's room. In series finale The Gift, though she is reluctant to use weapons or cause harm, when Luke falls deathly ill for the first time ever due to the machinations of the Blathereen-Slitheen, Sarah Jane takes up arms to confront them. In the episode's conclusion, regretfully she is forced to kill them using Mr Smith. Sarah Jane next appears in the Tenth Doctor two-part Doctor Who finale, "The End of Time", in 2010. When The Doctor is slowly dying from radiation poisoning, he makes timely visits to his close friends and companions; The Doctor saves Luke's life from an oncoming car on Bannerman Road (an inside joke by Russell T Davies commenting on actors' failure to look for cars before crossing the street because traffic is always stopped for them, something that he believes is especially important in a children’s show) and bids a silent farewell to Luke and to Sarah Jane. In the fourth season (2010) of The Sarah Jane Adventures, Sarah Jane sees Luke off to university in the first two-parter of the series, but continues her adventures alongside Rani and Clyde. The trio encounter the Eleventh Doctor (Matt Smith), as well as Sarah Jane's immediate predecessor as The Doctor's companion, Jo Grant (Katy Manning), in Death of the Doctor; aliens known as the Shansheeth fake The Doctor's death as part of a plot to gain access to the TARDIS using Jo and Sarah Jane's memories. The Empty Planet is this series' 'Sarah-lite' serial; with the rest of the population, Sarah Jane mysteriously vanishes, leaving Rani and Clyde to investigate without her. In Lost in Time, Sarah Jane is sent back in time on a mission from the mysterious Shopkeeper (Cyril Nri). Sarah Jane is convinced to retire by an alien plot in the series finale, earning a new nemesis and doppelgänger in Ruby White (Julie Graham); she is saved from Ruby when Luke drives down from university to her rescue. Sladen's death ended the show in the middle of its fifth series, which aired in 2011.