Sigma Solutions has long been in the business of delivering on extraordinary commissions. Missing a plane? They’ve got you. Curious about ‘solving’ emotions? So are they. Found some ancient runes you can’t decipher? They’ll at least try. At the heart of this enterprise are curious minds and dogged nerds of all disciplines; specialists working right at the cutting edge of their fields. Among them are four of Sigma’s superstars: computer scientist ALISHA, archaeologist MAYA, cryptographer GRAHAM and adventurer FRAN. This super-group was tasked with locating a missing piece of history. Happily,…