What are the greatest plots twists in history? The Usual Suspects? The Sixth Sense? Fight Club?
We're afraid those are all the incorrect answer, as a campaign advert for the midterm elections has just trumped every plot twist in every form of entertainment ever.
Yes, that's right. A campaign video.
Up in Arizona, the Republican congressman Paul Gosar, who is also a qualified dentist, is standing for re-election in November.
The 59-year-old is from one of the most conservative wings of the Republican party and has been in office since 2013.
Now, we don't know much about politics in Arizona, but judging by this campaign video from his Democrat opponent, David Brill, he isn't very popular.
The video features six different speakers who are all lamenting many of the policies that Gosar has put in place since his election.
That sounds fair enough. This type of full-on criticism isn't uncommon in US politics, but this video really digs the knife in as all the participants are actually Gosar's siblings.
The brutally savage advert has already gone viral and people can't honestly believe what they are seeing.
Future family gatherings should be interesting.
A little research into Gosar's political history reveals why his siblings might have turned on him in such a savage manner.
According to BBC News, Gosar has shown far-right and anti-Semitic tendencies and also come out in support of Tommy Robinson, having spoken at a pro-Robinson march in London in July this year, where he branded Muslim men a "scourge".
Another video sees his siblings criticise Gosar, where they vow to "stand up for our good name".
Gosar is yet to respond to the videos but he is expected to win his seat again having won his district by 71 per cent of the vote in 2016.
In addition, he can take some reassurance that not all of his family hate him, as he has 10 siblings and not all of them appear in Brill's campaign ad.