Utah v. Lafferty

Murders of Brenda Wright Lafferty and Erica Lafferty
LocationAmerican Fork, Utah, United States of America
DateJuly 24, 1984 (1984-07-24)
WeaponKnife
Deaths2 (Brenda Wright Lafferty and Erica Lafferty)
PerpetratorsRon Lafferty
Dan Lafferty

Utah v. Lafferty was a 1984 murder case in the U.S. state of Utah. Brothers Ron and Dan Lafferty were found guilty of murdering their brother Allan's wife Brenda Lafferty, along with Brenda's young daughter. The case gained substantial publicity due to statements by the accused that the murders were the result of a divine revelation related to the defendant's extremist interpretation of Mormon fundamentalist beliefs.