A StockPhrase used by a SensorCharacter. If used at the end of a fight, this is a convenient way of saying that someone is probably dead [[GoryDiscretionShot without any of the nasty gore]]. In other situations, it's an easy way to show that something is not quite right with a character; despite them being perfectly visible, they can't be detected by supernatural means. They might be DeadAllAlong, an {{Energy Being|s}}, or simply something other than human.

Related to NeverSayDie and DisneyDeath. See also MySignificanceSenseIsTingling. Compare FaintingSeer and PokeInTheThirdEye.
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!! Examples

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[[folder:Anime & Manga]]
* Used a lot in ''Manga/DragonBall Z'', in part because of the fact that characters can hide their presence and in part because most characters have some form of [[MySignificanceSenseIsTingling sensing]] [[SpiderSense power]].
** Used for the most drama at the beginning of the Android Saga. The heroes arrive at the city where Future Trunks predicted the androids would begin their rampage, but can't sense anything unusual. Yajirobe arrives, drops off some senzu beans, leaves in his sky-car - and gets blasted out of the air by the villains, with the heroes unable to even tell where the shot came from.
* In ''[[MagicalGirlLyricalNanoha Magical Record Lyrical Nanoha Force]]'', when Tohma was taken over by his [[SuperpoweredEvilSide Black Knight form]], [[spoiler:Isis]] notes that she is no longer able to detect any magic from him nor read his thoughts; it was as though he was just a walking corpse.
* In ''Manga/RGVeda'', when no one can sense [[spoiler: Ryu-ou's]] presence anymore.
* In the ''Anime/YuGiOh'' 4Kids dub, Yami says this after Pegasus's Shadow Game finishes Yugi. In the original Japanese version, there's no implication--it's straight out said that he's dead, [[NotQuiteDead even though he's not exactly so]].
* Whenever someone in ''Manga/{{Bleach}}'' gets really messed up, their friends become unable to sense their reiatsu. Though so far, this rarely means death. When a person's [[BattleAura Reiatsu]] gets ''really'' powerful, they can only be sensed by beings of comparable power. This uses a metaphor that a two-dimensional being can't detect a three-dimensional one.
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[[folder:Comicbooks]]
* In most versions of ''Franchise/SpiderMan'', one of the things that makes ComicBook/{{Venom}} such a threat is that he doesn't trigger Peter's SpiderSense. The Spot doesn't trigger the Spider Sense when he uses his TeleportSpam.
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[[folder:Film]]
* In ''Film/{{Serenity}}'', [[spoiler: River]] has a Level [[UpToEleven 11]] Freak Out because she can't sense the thoughts of [[spoiler: any of the Miranda colonists. Because Miranda is a GhostPlanet.]]
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[[folder:Literature]]
* ''Literature/TheObsidianTrilogy'': After the final battle, Vestakia notes that she can't sense her father, the Demon Prince any more, showing that he is finally dead.
* In the ''Literature/SwordOfTruth'' series, Adie, who sees solely using magic, is alarmed to discover that she is unable to see Richard's half-sister Jennsen, because she is one of the "[[AntiMagic pristinely ungifted]]".
* Alice from ''Literature/{{Twilight}}'' can only see the futures of humans (which she has been) or vampires (which she is). Anything else is a blind spot to her, including Jacob and his pack, and [[spoiler: Nessie, Bella's HalfHumanHybrid daughter]].
* In ''Literature/TheWheelOfTime'' Aes Sedai bond Warders as a means of protection. This bond forms an empathic link between the two allowing them to sense the direction and distance to each other, as well as emotional and physical state. If either member of the bond dies, the loss is ''very'' noticeable to the other. An Aes Sedai will experience serious depression from the death of a Warder. The Warder will usually either die of shock or fly into a RoaringRampageOfRevenge.
* Jedi in the Franchise/StarWarsExpandedUniverse have this happen to them quite often. Unusually, it's often taken not to mean death, because Jedi can feel the deaths of other Jedi particularly strongly. Someone ceasing to be detectable usually means something even more bizarre has happened. ([[AntiMagic Ysalamiri]] are a common culprit, along with any other way someone could conceivably be separated from the Force.)
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[[folder:Live Action TV]]
* Leo from ''Series/{{Charmed}}'' would often do this, especially when one of the sisters were missing.
* On ''Series/StarTrekTheNextGeneration'' one Betazoid - who generally get their mind-reading powers at puberty but in his case they manifested when he was a baby, so he's been inundated with others' thoughts all his life & can't filter them out - is very pleasantly surprised when he can't hear Data's thoughts, since Data is an android.
* ''Series/{{Tracker}}'' has a version of this, but not because of death. Cole just had a harder time keying into his targets' life forces as they adapted more and more to Earth's environment.
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[[folder:WesternAnimation]]
* In the ''WesternAnimation/JusticeLeague'' pilot, [[MartianManhunter J'onn J'onzz]] claims that he can't (telepathically) sense the presence of Franchise/{{Batman}} anymore when the latter is apparently shot to death. It's a lie, [[ForegoneConclusion obviously]].
** Averted when the League thinks SelfDemonstrating/LexLuthor killed TheFlash, as he had done in an AlternateUniverse. J'onn can sense that he is still alive, and they save him from [[AscendToAHigherPlaneOfExistence disappearing into the Speed Force]].
* In ''WesternAnimation/{{Wolverine and the X-Men}}'', Emma Frost can't find Jean Grey via Cerebro, leading nearly everyone to assume that she's dead. Turns out she's actually in a coma.
* In the two-part opener of the ''WesternAnimation/{{X-Men}}'' animated series, Morph's death is indicated by having Jean Grey and Professor X unable to detect his mind via Cerebro.
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