No Escape From The Alhambra

"Boston is on a school trip to Spain when he comes across an ancient tile at a local market and is transported back to 1492, during the turbulence of the Spanish Inquisition. Arousing suspicion at the Spanish royal court means he must go on the run to stay alive. Two new friends, Tariq and Salomon, try to help, but they are threatened themselves by the Christian monarchy. Will Boston be able to find a way back to the present day without altering the course of history?"--Jacket flap

Kirsten Boie is a German children's author and activist. Having worked as a teacher, she began publishing in 1985 and is the author of more than 100 books.