School for Good and Evil characters in a Hogwarts AU

When Agatha first hitchiked a ride with a guy named Tedros, all she had in mind was getting home. Now her life has changed significantly- she and Tedros have been entangled in a crime as two witnesses. This unravels a string of events that Agatha could never have imagined.

Prince Tedros is sent on a voyage by his father, to capture a mermaid. King Arthur has been told that the scales on a mermaid are worth quite a lot of gold. Tedros and his crew venture to Neverland to find themselves a mermaid.