The Grove of the Caesars

Don't go to the Grove . . .
Julius Caesar left his gardens to the citizens of Rome, a peaceful sanctuary across the Tiber. Now the gardens and their sacred grove are dangerous haunts, especially for women alone.
'Don't go to the Grove,' people mutter, but when her husband has to leave Rome, it falls to Albia to supervise his building project in an old grotto. Why has someone buried tattered scrolls by obscure philosophers - and does it involve a worse crime than terrible writing?
Soon that pu