Chandler, Miles and the team cross paths with MI6 as they investigate the gruesome murder of an apparent tramp. The murder, they discover, is a 16th-century torture, the peine forte et dure. 

As the witch-hunt continues, with two corpses (the second burnt at the stake) in the morgue and a third person missing, the team must save the next victim and catch the killer, who they realize has ergot poisoning.

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