Kat and Hale jet to Vegas. Not to gamble, or to see Elton John, but to attend the International Association of Advanced Mathematics and Research. Um, yawn.
But they're not there because they're really into solving for X or making scatter plots, or whatever mathematicians do; they're there to meet Simon, a teen tech genius.
Supplying Simon with some blueprints of Taccone's place, Kat asks Simon if he can figure out who stole the paintings.
It doesn't look like Simon can. So Kat decides they're all just going to have to go to Italy themselves.