After Bennett left Nauvoo in May 1842, he claimed he had been the target of an attempted assassination by Nauvoo
Danites, who were disguised as women. In July 1842, he wrote a series of letters to
The Sangamo Journal, accusing Smith of conspiring to
assassinate former Missouri Governor Boggs. In late 1842, Bennett published
History of the Saints: Or, An Exposé of Joe Smith and Mormonism, accusing Smith and his church of crimes including
treason,
conspiracy to commit murder, prostitution, and adultery, with a preface that begins: "I have been induced to prepare and publish the following work by a desire to expose the enormous iniquities which have perpetrated by one of the grossest and most infamous impostors that ever appeared upon the face of the earth, and by many of his minions, under the name and garb of Religion, and professedly by the direct will and command of Almighty God." Through his newspaper writings and book, Bennett appeared to encourage Missouri's June 1843 attempt to extradite Smith to stand trial for treason. Ironically, Smith narrowly escaped extradition by virtue of the powerful Nauvoo charter for which Bennett had been a principal author. In the fall of 1843, Bennett visited
George M. Hinkle, a Mormon who was
excommunicated after surrendering Smith to the Missouri Militia in 1838. Bennett's subsequent letter to the editor of the
Hawk-Eye and Iowa Patriot describing the Mormon "Doctrine of Marrying for Eternity" is the first of his writings that discusses
eternal marriage, as compared to the free love/spiritual wife doctrine he previously accused Smith of practicing, in which sexual relations were not in the context of committed marriage. It is unclear whether Bennett learned of eternal marriage from Hinkle or from correspondents inside Nauvoo. Bennett briefly returned to Nauvoo in December 1843, but the sole record of that visit is a notation in Smith's daybook from his general store showing a payment of the rent Bennett owed for the 39 weeks he lived in the Mansion House in 1840 to 1841. After December 1843, Bennett is recorded to have lectured only once more against Mormonism during Smith's life in Boston during the spring of 1844. At the 1844 Boston lecture, Bennett was not well received: he was pelted with rotten eggs and chased through Boston by the "vast assemblage", which ran over several Boston police officers in the process. After
Smith was killed by a mob in
Carthage, Illinois, on June 27, 1844, Bennett surprised many by returning briefly to Mormonism and joining forces first with
Sidney Rigdon and then with
James Strang, two of several Mormons contending for leadership of the movement. Bennett united with the "
Strangites", who founded their own Mormon community on
Beaver Island in Michigan. While there, he founded a short-lived Halcyon Order of the
Illuminati to reinforce Strang's power over his kingdom. With Bennett's enthusiastic support, polygamy was introduced into the Michigan Mormon community (this led to the dissent of anti-polygamists from Strang's faction & was a contributing factor leading to Strang's assassination). Shortly thereafter, in 1847, amid more charges of sexual misconduct, Bennett was excommunicated from the Strangite community. Bennett did not associate with any Latter Day Saint group for the remainder of his life. Bennett has been accused of having a part in Smith's murder, but, as his biographer Andrew F. Smith (no relation to Joseph Smith) states, based on the extant evidence, "Bennett appears to have had no influence on the events that unfolded in Carthage during June 1844." Bennett is often credited with introducing into Mormonism the term "spiritual wifery", the term he used for both his own practice of "free love" and for the Nauvoo practice of "
plural marriage". The term was occasionally used by Mormon leaders such as
Brigham Young, who spoke of the shock he received when introduced by Smith to "the spiritual wife doctrine", referring to "plural marriage". One of Bennett's legacies was the conflation of "plural marriage" with "free love" in the popular imagination. The term "spiritual wifery", with its mixed connotations of
polygyny and promiscuity, was frequently used in the national dialogue and in activism against Mormon polygamy. ==Legacy==