In the run-up to Halloween, the CIA has tweeted a spooky scene and asked eagle-eyed followers to see if they can spot the difference.
'Can you spot the disguised differences?' the spy agency tweeted together with a pair of typical Halloween images that includes everything from graveyards and pumpkins to bats and broomsticks.
Twitter users then took it upon themselves to solve the timely puzzle with some retweeting the images with some noticing up to 13 differences between the pair of pictures.
The CIA released a picture depicting Halloween asking people to spot the difference
But several also failed to get into the spirit of the season with one person asking: 'Don’t you have more important things to do?'
'Well done - I think this means you are hired - report for duty and pick up your sidearm and four fake passports,' joked Kathleen DiGregorio.
'Are those the ghosts of US citizens that the CIA has assassinated without trial?' joked another Twitter user.
Scroll down to the bottom of the article to see the solution...
It didn't take long before followers of the CIA Twitter were tweeting their responses
One person found 13 differences which appeared to be the maximum number
Many annotated the original image with the differences they had found
Others simply tweeted their frustration at noticing there were several differences they missed
Other Twitter users had more creative takes on the meaning of the puzzle's imagery
One Twitter user joked that if people had solved the puzzle they could be hired for a CIA job
Most respondents played along, but one person asked whether there wasn't more important things the intelligence agency could be doing
The CIA has a dedicated page aimed at attracting youngsters to look further at the agency with several more spot the difference puzzles.
The #TriviaTuesday buzz also took place last month, in a different scene when Twitter users found 12 differences when the CIA said there were 11 to find.
The CIA responded the next day: 'If you found more than 11 differences, you practiced good tradecraft. Always look for opportunities to learn more.'
Last month the CIA did something similar with users finding more differences than the solution had suggested
Some people tweeted that they'd found more than the 11 boxes CIA drew attention to
How spooked out were you? There are 13 differences between the two pictures. Not such an unlucky number after all!