If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

One cloudy afternoon...

You are walking down the street, when suddenly, an object is tossed out of a speeding car...

walk

It looks like a bag...

bag

close

You are curious... curious

Looks suspicious...so you snap a few photographs of the contents:

One item really jumps out at you, it looks like some kind of secret code...

 

You return home just in time to hear the evening news...

“Two thieves in their mid 20s are suspected to be in the area, they have been known to strike in neighbouring towns. Just earlier this week the AMCO insurance office was burglarized and documents were stolen. Reward is being offered for information leading to their arrest....”

To break this code you must retrace their steps...