History Recap / TheSarahJaneAdventuresS2E1E2TheLastSontaran

* BatmanGrabsAGun: Knowing all too well the potential threat even a single Sontaran can pose, Sarah Jane instantly decides to contact UNIT to help deal with the situation in spite her usual preference to leave trigger-happy militarised organisations out of her lighthearted adventures. However, she did call UNIT before back in Recap/TheSarahJaneAdventuresS1E1E2RevengeOfTheSlitheen Revenge of the Slitheen]] after the local slitheen cell was dealt with.

* BatmanGrabsAGun: Knowing all too well the potential threat even a single Sontaran can pose, Sarah Jane instantly decides to contact UNIT to help deal with the situation in spite her usual preference to leave trigger-happy militarised organisations out of her lighthearted adventures.

* AttackItsWeakPoint: Chrissie attacks Kaagh's his probic vent. With her high heels.
* BadassBoast: An unconventional one but Sarah Jane successfully intimidates Kaagh by displaying her otherworldly knowledge of the Sontaran's history and future from her past encounters with his kind. It convinces him that she is truly an "extraordinary female".

** As Maria enters the attic to take one last look around and to say goodbye to Mr Smith, she looks to her left and sees numerous alien objects Sarah Jane has collected, including; a bottle of Bubble Shock! seen in "[[Recap/TheSarahJaneAdventuresNYSInvasionOfTheBane Invasion of the Bane]]"; Mr Smith's Portable Scanner; a Sontaran gas canister and Kaagh's gun taken from Kaagh in this story; the MITRE headset seen in "[[Recap/TheSarahJaneAdventuresS1E9E10TheLostBoy The Lost Boy]]"; a puzzle box seen in "[[Recap/TheSarahJaneAdventuresS1E7E8WhateverHappenedToSarahJane Whatever Happened to Sarah Jane?]]"; and entanglement shells seen in "[[Recap/TheSarahJaneAdventuresS1E5E6WarriorsOfKudlak Warriors of Kudlak]]".

* SequelEpisode: Kaagh is out to destroy the Earth in retaliation for the events of "[[Recap/DoctorWhoS30E4TheSontaranStratagem The Sontaran Stratagem]][=/=][[Recap/DoctorWhoS30E5ThePoisonSky The Poison Sky]]".
* ShoutOut:
** When Sarah Jane asks Mr Smith if he has acquired a sense of humor since his reboot, he replies, "I will run a diagnostics check immediately" whilst playing the sound effect associated with the Book from the television adaptation of ''Series/TheHitchhikersGuideToTheGalaxy1981''.

** When Sarah Jane asks Mr Smith if he has acquired a sense of humor since his reboot, he replies, "I will run a diagnostics check immediately" whilst playing the sound effect associated with the Book from the television adaptation of ''Series/TheHitchhikersGuideToTheGalaxy''.

** When Alan tries to convince Chrissie that Maria is playing an alternate reality game, Chrissie compares it to the time they spent "looking for a golden rabbit" when they were dating, referring to ''Literature/{{Masquerade}}''.

* LookBehindYou: "Look, UNIT!"

* ContinuityNod: To ''The Sontaran Strategem'' in the main ''Series/DoctorWho'' series.
** Several when Maria goes to take one last look in the attic. We see Bubble Shock and the box from ''Whatever Happened to Sarah Jane?'' among others.
** Kaagh's motivation is being able to avenge his fleets defeat from the Poison Sky.
** Not to mention all the way back to Classic Who stories [[Recap/DoctorWhoS11E1TheTimeWarrior The Time Warrior]] and [[Recap/DoctorWhoS12E3TheSontaranExperiment The Sontaran Experiment]], which also featured solo Sontaran reconnaissance units as antagonists. Sarah Jane directly references her previous encounters with Sontarans in these stories to intimidate Kaagh.

* TheRemnant: Kaagh is the last survivor of the Tenth Sontaran Battle Fleet and his sole motivation is to destroy all life on Earth out of spite.

* LaserGuidedAmnesia: Subverted. Chrissie is knocked unconscious after hitting Kaagh in his [[AttackItsWeakPoint probic vent]] and the gang just assumes she'll wake up with no memory of what happened. At the end of the episode, Chrissie reveals that she remembers everything.

* OhCrap: Sarah Janes reaction to the Sontaran ship and instantly desired to contact UNIT even though her companions believed that they should always be discreet and peaceful with their encounters.

** Not to mention all the way back to Classic Who stories [[Recap/DoctorWhoS11E1TheTimeWarrior The Time Warrior]] and [[Recap/DoctorWhoS12E3TheSontaranExperiment The Sontaran Experiment]].
* FamedInStory: Part of Kaagh's motivation since he's been disgraced by being the lone survivor of a failed campaign.

* PutOnABus: Maria and Alan.

** Not to mention all the way back to Classic Who stories [[Recap/DoctorWhoS11E1TheTimeWarrior The Time Warrior]] and [[DoctorWhoS12E3TheSontaranExperiment The Sontaran Experiment]].

** Not to mention all the way back to Classic Who stories Recap/DoctorWhoS11E1TheTimeWarrior and DoctorWhoS12E3TheSontaranExperiment.

** Not to mention all the way back to Classic Who stories The Time Warrior and The Sontaran Experiment.

Kaagh, the lone surviving Sontaran from ''[[{{Recap/DoctorWhoNSS4E4TheSontaranStratagem}} The Sontaran Stratagem]]'' plots revenge against the Earth by dropping satellites onto nuclear reactors.

!!Tropes

* ChekovsClassroom: Chrissie walks in right when Mr. Smith is telling Alan how to defeat a Sontaran. See below for how that turns out.

* IDontLikeTheSoundOfThatPlace: The village with the observatory is called "Goblin's Corpse."