The Magic Maker - The Guardians of Time, #2

Emilia has got the hang of the whole time travel thing and she's managing to juggle it alongside a busy University schedule. She and Seb have formed a solid partnership and an even better friendship, although there are still some things both keep close to their chests. As Eddie makes his intentions clear and Justin tries to keep his hat in the ring, Seb has to battle his own jealousy and increasingly uncontrollable feelings for Emilia.
Guarding his heart is proving to be his biggest challenge yet!Their adventures take them to India, China and the Ottoman Empire, where the dangers they face increase with every mission. But when tragedy strikes and turns Emilia's world upside down, Seb may have left his run too late.