Stravaganza

Seventeen-year-old Sky joins Georgia and the other Stravagante, "who travel between worlds and do what is required, " when he leaves London for Giglia, a city similar to Renaissance Florence, and becomes involved in ancient feuds and palace intrigue.

Feeling inferior to her talented twin brother, teenaged Isabel is transported to a parallel world that resembles the Italian Renaissance city-state of Ravenna, where she tries to save the city from attack by the fierce Gate people.

Seventeen-year-old Matt, painfully dyslexic and insecure, discovers that he can travel between worlds after being transported to Talia, where he joins Luciano and other Stravaganti in trying to prevent the di Chimici family's breakthrough into our world.

Fifteen-year-old Georgia, who loves horses as much as she hates her bullying stepbrother, buys a figurine of a winged horse and finds it has magical powers that transport her from present-day London to the sixteenth-century world of Talia where, in the city of Remora, similar to Sienna, Italy, she finds danger and intrigue as well as friendship and a chance to perfect her riding skills.