August, 1585. A relentless enemy. A treacherous conspiracy. Elizabethan England is on the brink of war.

Sir Francis Drake is preparing to launch a daring expedition against the Spanish when a murder aboard his ship changes everything.

Giordano Bruno agrees to hunt the killer down, only to find that more than one deadly plot is brewing in Plymouth's murky underworld. And as he tracks a murderer through its dangerous streets, he uncovers a conspiracy that threatens the future of England itself.