For 55 years, Doctor Who has delivered scares by making the familiar seem unfamiliar. By transforming the everyday into something strange.

"There's nothing scarier than coming home and finding a Yeti on your loo in Tooting Bec," third Doctor actor Jon Pertwee has often been quoted as saying. A unique phrasing, but it's the same sentiment – there's nothing more unsettling than seeing your own recognisable world turned upside down.

For all the changes it might bring, we suspect the Jodie Whittaker era will continue to embrace this principle, one that's served the show well for more than half a century.

As for what we've encountered so far, just look at this lot.

1. Statues - 'Blink'

BBC

Turns out those stony figures you find in graveyards and public squares are actually malevolent beings who pounce when you're not looking.

They might look like they're standing still, but one blink is all it takes, and they'll be on you. (And it's not just the spooky-looking ones – any statue could secretly be a Weeping Angel.)

Cheers for that nightmare, Steven Moffat.

2. Troll dolls - 'Terror of the Autons'

BBC

This 1971 adventure saw the Master (Roger Delgado) team with the alien Nestenes to create a living plastic troll doll, leaving a nation of littl'uns terrified of their own teddy bears.

Scenes in which the doll sprouted fangs and attacked people were cited by the press – and even in a debate in the House of Lords – as being too frightening for kids. Naughty Doctor Who.

3. Cracks - 'The Eleventh Hour'

BBC

That crack in your bedroom wall – probably just some broken plaster, right?

Nope, it's a portal to another universe, through which terrifying prisoner-monsters can pay you a visit! Oh, and if anything gets sucked into the crack – like, say, a loved one – they'll be erased from history and you'll forget them forever.

Cheery tea-time entertainment.

4. Inflatable chairs - 'Terror of the Autons'

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Another terror from the Master and his Nestene pals, plonk down in this piece of living plastic at your peril.

As punishment for his "insolence", poor George McDermott (Harry Towb) was smothered to death by the chair in one of the most disturbing sequences in Doctor Who's long history.

5. Show window dummies - 'Spearhead from Space'

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But before the troll dolls, before the inflatable chairs, the Nestene consciousness first attempted to stage an invasion of Britain by taking over our high streets.

In an iconic sequence from Jon Pertwee's 1970 debut, shop window dummies sprang to life and mercilessly mowed down bystanders. So good, Russell T Davies practically lifted it wholesale for 2005's 'Rose'.

6. Kids' drawings - 'Fear Her'

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Until 2006's 'Fear Her', the scariest thing you could associate with a kids' drawing was the thought of a friend showing off their offspring's "artwork" and having to pretend their little tyke was the next Van Gogh.

Here though, a scribble on a page can kill you. It's a chilling thought – one unsettling enough that almost all Doctor Who fans swore off watching 'Fear Her' ever again...

...Wait, what do you mean that's not the reason?

7. Christmas trees - 'The Christmas Invasion'

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'Tis the season to be torn apart by the Roboform's razor-tipped trees.

As if frightening festive foliage wasn't bad enough, Doctor Who's Yueltide specials have also delivered deadly decorations, with remote-controlled bauble bombs appearing in 'The Runaway Bride'.

8. Sat Navs - 'The Sontaran Stratagem / The Poison Sky'

BBC

We've all been led astray by Google Maps... but what if it was doing it on purpose?

This 2008 two-parter gave us ATMOS, a sinister Sat Nav that was part of a Sontaran plot to invade Earth and drove poor Jo Nakashima (Eleanor Matsuura) into a river.

She was just a journalist trying to do her job, you guys.

9. Wi-fi - 'The Bells of Saint John'

BBC

Evil Wi-fi?!

Yep. This 2013 Matt Smith episode saw the alien Great Intelligence use the world's Wi-Fi to upload not just data but people to the cloud.

It was, all told, a rather more subtle approach than the Intelligence's previous attempt at an Earth invasion, which involved using giant robot Yeti.

10. Water - 'The Waters of Mars'

"Don't drink the water. Don't even touch it. Not one drop."

This dark 2009 special saw the water supply on a Mars base infected with a contagion that transformed human beings into zombies.

Still, at least that happened on a faraway planet, right? Oh wait, 2017's 'The Pilot' tells us we should be wary of regular old Earth puddles too, in case it's actually sentient oil from an alien spaceship.

Gah.

11. Shadows – 'Silence in the Library'

BBC

It's one thing to be afraid of the dark, but the two-parter 'Silence in the Library'/'Forest of the Dead' introduced us to a 51st-century library infested with the carnivorous Vashta Nerada, who took the form of sentient shadows and ate people down to their bones. *shudder*.

12. Breathing - 'Deep Breath'

BBC

Yes, in Peter Capaldi's first outing, his Doctor and Jenna Coleman's Clara must hold their breath if they want to avoid detection by a horde of rampaging robots.

So if you're taking notes, here's what to avoid in life according to the Whoniverse: stone statues, plastic statues, cracks, toys, chairs, trees, the internet, art, water, shadows and breathing.

Piece o' cake.

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