 If proven to be true, this testimony would disprove Mansfield's alibi.Furthermore, it was reported that a Mrs. Vina Tompkins, of Marshalltown, was on her way to testify that she heard three men in the woods plotting the murder of the Moore family a short time before the killings.Henry Lee Moore was a suspected serial killer (who was not related to the slain Moore family) who was convicted of the murder of his mother and grandmother several months after the murders in Villisca, his weapon of choice being an axe.