In a life stranger than any fiction, Grace O’Malley, daughter of a clan chief in the far west of Ireland, went from marriage at fifteen to piracy on the high seas. She soon had a fleet of galleys under her commander, but her three decades of plundering, kidnapping, murder and mayhem came to a close in 1586, when she was captured and sentenced to hang.

Saved from the scaffold by none other than Queen Elizabeth herself—another powerful woman in a man’s world—Grace’s life took another extraordinary turn, when it was rumored she had become intelligencer for the queen’s spymaster, Sir Francis Walsingham. Was this the price of her freedom?