History Recap / BlackMirrorMetalhead

* FinalSolution: As an alternative theory to GoneHorriblyWrong is that the dogs' mission is to completely depopulate an enemy country. One could easily see it as the sequel to [[Recap/BlackMirrorMenAgainstFire Men Against Fire]].

* ChekovsGun: Bella gets teased about her sweets barely a minute into the episode. She later uses her supply to bait the Dog into wasting its power reserves by throwing them at it every time it tries to engage its power saving mode.

* LogicalWeakness: As fearsome as the Dogs are, putting paint over their optic shields can blind them and throw off their scanning. They're still dangerous even if they're blind, but can only use sound as a judge to find what to attack next.

* TooDumbToLive: True to the genre the episode pays homage to, the protagonists tend to make spectacularly dumb decisions on a regular basis. Two name but the two worst examples: 1) Bella knows the Dog can track radio transmissions, yet instead of keeping it short and precise, she goes on a veritable speech like she just won the Oscar. 2) The very reason the trio even went to the warehouse in the first place - to get a teddy bear for some kid that won't live to see the next week anyway. Doesn't get much dumber than that in a world overrun by murderous robo-dogs you can't defend against.

* BetterToDieThanBeKilled: This is implied to be the case. Bella kills herself with a knife before the Dogs find her.

* ActionSurvivor: Bella, naturally.

In a post-apocalyptic DeliberatelyMonochrome world, a woman is pursued by a robotic guard dog.

[[center:[-'''[[Recap/BlackMirror Series Four]]'''-]]]

%% HandlingSpoilers: An episode recap page is, by default, a spoiler. Readers of these pages are expected to have watched the episode in question. Therefore, there are no spoiler tags on recap pages. Conversely, do not add spoilers for future episodes, even under tags. Those go on the later episode pages.

* DeliberatelyMonochrome: The entire episode is in black and white. According to Charlie Brooker, partially as an homage to old horror movies like NightOfTheLivingDead1968.

* DeliberatelyMonochrome: The entire episode is in black and white.

* FragileSpeedster: Mixed with {{Glass Cannon}}. The dogs are fast enough to keep up with (and jump in to) a moving van, and have a primary weapon capable of killing an unarmoured human in one or two shots, but two shotgun blasts are all it takes to render one non-functional.

--> LOADED: \PAUSING.this.you.freak

* JustifiedTitle: The title and black-and-white art style might lead some to think that the episode is about the HeavyMetal subculture. There's nothing related to heavy metal in the episode; the title refers to the KillerRobot.

** A much more exotic version happens when Clarke is killed by the dog in a hacked self-driving van, and then it ''[[ParanoiaFuel hacks into the car and starts chasing her.]]''

* RecursiveAmmo: The dogs shoot shrapnel bombs, not to kill their prey, but rather to tag them with hard-to-remove [[TrackingDevice tracking devices]], the better to hunt them down.

* ShootTheShaggyDog: All the characters die without getting what they set out for -- which turns out to be a simple teddy bear.

** The “Dog” in the episode is obviously named and based on Boston Dynamics’ [[https://en.wikipedia.org/wiki/BigDog BigDog.]] The body itself, however, is closely modeled on the -- at the time of the episode's making -- newest version of their robot, [[https://youtu.be/kgaO45SyaO4 SpotMini,]] even down to the gait and having the camera in the right place.

* WeHardlyKnewYe: Tony and Clarke are killed without much development.

** As Bella is searching for car keys in a draw, a takeaway menu for Barnies BBQ, the restaurant Kenny works for in ''Shut Up and Dance'' is briefly seen.

* {{Foreshadowing}}: Bella finds a house with a couple who killed themselves with a shotgun before the dogs could get to them. After Bella's own fight with a Dog with said shotgun, where she realizes she can't go on, she kills herself by slitting her throat in that same house.

* TemptingFate: Subverted. Bella triumphantly taunts and mocks the dog for its futile attempts to climb the tree with a broken leg, but rather than shock her with a display of impossible acrobatic celerity, it quickly accepts reality and decides to play the waiting game instead.

* JustifiedTitle: The title and black-and-white art style might remind some of HeavyMetal music. Of course, the title refers to the KillerRobot and there's no heavy metal in the episode.

* {{Foreshadowing}}: Bella finds a house with a couple who killed themselves with a shotgun before the dogs could get to them. After Bella's own fight with a Dog, where she realizes she can't go on, she kills herself by slitting her throat in that same house.