Captain Blood is an adventure novel by Rafael Sabatini. The protagonist is the sharp-witted Dr. Peter Blood, a fictional Irish physician who had had a wide-ranging career as a soldier and sailor (including a commission as a captain under the Dutch admiral De Ruyter) before settling down to practice medicine in the town of Bridgwater in Somerset. The book opens with him attending to his geraniums while the town prepares to fight for the Duke of Monmouth....

Set in seventeenth century England, a surgeon becomes a pirate after he is arrested and condemned to slavery for caring for a rebel against the king.