The Bronze and the Brimstone (Verona Trilogy #2) Book

What could go wrong in the 14th-century for three time-traveling teens? How about – EVERYTHING!
Hansum, Shamira and Lincoln, three teens from the 24th century, are trapped in 14th-century Verona, Italy. They've survived many deadly experiences by keeping their wits about them and by introducing futuristic technology into the past. Principal among these inventions is the telescope, which brought them to the attention of the rich and powerful.
But standing out can get you into unexpected and dangerous situations. The nobles of Verona now believe Hansum is a savant, a genius inventor, especially after he brings them plans for advanced cannons and black powder. Being the center of attention is great, but the potential for trouble is now exponentially greater because people are watching Hansum's every move.
Meanwhile, artistic genius Shamira has fallen for a Florentine artist with bloody and disastrous consequences. Lincoln, considered an incompetent back home in the 24th-century, has blossomed – at least until he's shot in the head with an arrow. And Hansum, after secretly marrying his new master's beautiful daughter, Guilietta, is offered the hand in marriage of lady Beatrice, daughter of the ruler of Verona. To refuse could mean calamity for all the teens.
Amazingly, none of this is their biggest challenge. Because a rash illness is spreading across Verona – and it is threatening to consume everyone.
Do they have a future in this past?