The Vault of Secrets ( TV story ) The Vault of Secrets was the second story in the fourth series of " The Sarah Jane Adventures " . Androvax returned , and the Alliance of Shades made their live - action debut after being introduced in " Dreamland " . Synopsis . When an old enemy , Androvax the Veil , returns to Earth asking for help , the gang face a dilemma — should they trust him ? Or does the legendary Vault hold an even greater terror ? A second threat arises , when android guardians threaten to destroy anyone who uncovers their secrets . As the battle between Sarah , Androvax and the androids reaches its climax , Rani has to save her mother from being caught in the crossfire . The Vault opens and the destiny of the entire Veil species is at stake . Is it too late to save them ? Plot . Part 1 . A teenage girl enters an old asylum and approaches the Vault of Secrets . She tries to access it , but only has one disc and needs two . She is confronted by the Alliance of Shades . She runs , hurts herself and falls over . Androvax , the " destroyer of worlds " , exits her body and escapes . The Alliance of Shades ( a . k . a . Men in Black ) arrive and scan the unconscious girl . They announce the Veil is no longer in her . Sarah , Clyde and Rani are in the attic , speaking to Luke on webcam . Mr Smith interferes with a NASA space probe on Mars , as Sarah wishes to prevent the probe discovering an " ancient and deadly civilisation " . Gita and her husband Haresh have joined B . U . R . P . S . S . ( British UFO Research and Paranormal Studies Society ) after their encounter with the Judoon and Androvax . When the couple return home on Bannerman Road , Gita spots Androvax entering Sarah ' s front garden . Gita gives Haresh a tyre iron and he goes to investigate . He encounters Sarah , Rani and Clyde . After speaking with them , he leaves . Unseen , Androvax enters Rani ' s body . Sarah scans for alien activity and realises Rani has been taken over . Sarah and Clyde chase her / him to the attic and order Mr Smith to contain him after he willingly exits Rani ' s body . Surprisingly , he asks for Sarah ' s help . They learn Androvax is dying . Since they last encountered him , he has escaped a Judoon prison in a swamp . In doing so , he was poisoned by an alien swamp viper . He is dying slowly and intends to free a hundred of his people from cryogenic sleep in the Vault of Secrets . They are the last survivors of the Veil species aside from Androvax himself . Forty years ago , their ship crashed on Earth and was sent to the Vault by the Alliance of Shades . Ocean Waters ( B . U . R . P . S . S . ' s founder ) arrives with Minty at Bannerman Road to scan for alien activity by picking up beta particles . Sarah uses her sonic lipstick to deactivate this device . The three of them go to investigate a mental asylum , where they find the base of the Men in Black . They discover Ocean Waters was abducted in 1972 and met the Men in Black . The Men in Black arrive to confront them . They activate their robotic hands . They tell Sarah that she must hand over Androvax and their disc or be incinerated . The gang arrive home , where they agree to let Androvax use Clyde ' s body . They speak to Ocean and Minty . Ocean has the other disc needed to enter the Vault . She recalls past encounters with the Men in Black and Mister Dread . As Androvax grabs the two discs , the Men in Black arrive and tell them to prepare to be incinerated . Part 2 . The incineration is averted . Androvax escapes and enters Gita ' s body . Gita leaves to the Vault . She is followed by Mister Dread , Sarah , Rani and Clyde . Sarah Jane makes Mister Dread ' s car malfunction , so he acquires a new one ( which he takes from a civillian by force ) . They all arrive at the asylum , where Rani and Clyde rescue Gita . Androvax leaves and encounters Sarah . She refuses to help him because when the Veil are reawakened and leave Earth , the spaceships will make Earth explode , ending human civilisation . Androvax takes over her body . Clyde jumps away from an incineration blast from two Men in Black causing the two men destroy each other . Rani explains to her mother about aliens and how she , Sarah and Clyde have met them . Mister Dread is placed into his capsule and made to sleep . Androvax goes to the Vault in Sarah ' s body . When Rani , Clyde and Gita run in at the point Androvax wants to open the vault , Androvax pretends to be Sarah . He / she lies to the gang , telling them that Androvax is dead and that they don ' t need to be worried about them and then opens the Vault , revealing many spaceships . Androvax leaves Sarah ' s body , and locks himself inside the Vault , which is hyper - dimensional making it bigger on the inside . The team awaken Mister Dread , who gives up four hundred fifty years of his energy powering the transmat device to move Androvax ' s spaceship into space allowing Androvax and his race to leave without destroying Earth . Mister Dread is low on power and declares his mission terminated . He erases Gita ' s memory , lest she tell the world about their experiences . He goes to sleep in his capsule . The team returns home . Ocean and Minty arrive to ask about the Men in Black . Sarah denies everything and Gita says she doesn ' t believe in aliens . Minty and Ocean say that the aliens have won again and leave . Androvax is in outer space . He flies away to find a new world for his species . As the Veil ship departs , his voice can be heard narrating , " Somewhere , there is a new planet for the Veil . A new hope , it is the legacy of Androvax , a new beginning . . . a second genesis . " Story notes . Production errors . " to be added "