chunk: 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. He wants no part in the rebellion, but while attending to some of the rebels wounded at the Battle of Sedgemoor, Peter is arrested. During the Bloody Assizes, he is convicted by the infamous Judge Jeffreys of treason on the grounds that "if any person be in actual rebellion against the King, and another personâwho really and actually was not in rebellionâdoes knowingly receive, harbour, comfort, or succour him, such a person is as much a traitor as he who indeed bore arms."