I kind of went a bit silly and grabbed the series from the library after enjoying the first one...
This time there is a thief amongst the students...and his name is Antony. He steals a sword that Cleopatra needs in order to fulfill the prophecy and takes off to sell it to the "evil" Octavian. Meanwhile...back at school, Cleopatra gets in trouble for chasing after a thief and ruining school property...she also learns why her roommate believes the prophecy so much and adores Cleo. They decide (with the help of a teacher) to go on a journey to track down the sword---
I like the artwork.
Read if you read book and and enjoy the series.