The poison murders of Jack the Ripper

"Considered a primary suspect in the Jack the Ripper murders, Polish-born Severin Antoniovich Klosowski also gained considerable notoriety as "The Borough Poisoner of Southwark" in the late 1800s. Within a span of five years, Klosowski took on three women as his wives and lethally poisoned each with deadly doses of antimony"--Provided by publisher.