Libros de Caroline Lawrence (2 libros)

When a Roman widow, Cartila, shows unusual interest in Flavia's father, Flavia decides to discover Cartila's true motives by performing twelve tasks, just like the Greek hero Hercules.

Eleven-year-old Flavia and her friends Jonatán, Lupo, and Nubia are invited to visit Pulcra, who asks them to uncover who is trying to poison her mother.