Lynching of Irwin Grubb
Grubb was soon identified as the man who had been with Anderson in the wagon, and he was located back in Lawrence County, arrested on suspicion of murder, and taken back to stand trial. On the trip back to McDonald County, Grubb reportedly confessed, saying at first that he had killed Anderson during an argument and scuffle over a broken saucer but later admitting that he had shot him while he slept and then shot him again and again when Anderson tried to rise. The officers who were taking Grubb back to McDonald County laid over in Neosho with their prisoner, and it was predicted there that Grubb would never reach Pineville but would "adorn a post oak tree instead" somewhere between Neosho and Pineville. A mob did, in fact, form, but not until after the officers reached Pineville. The mob was dissuaded from taking the law into its own hands, and Grubb was promptly taken back to the Jasper County jail at Carthage for safekeeping until his trial.
Grubb was returned to Pineville in late October for trial but was granted a continuance at the November term of court. Afraid that Grubb might "escape his just reward," as one newspaper phrased it, a mob once again formed. (This was apparently at least the third time that a mob had formed bent on vigilante justice in the Grubb case.) When the deputy and the guard who were watching the prisoner left the jail to get a drink of water, two or three men with pistols suddenly appeared and shoved the weapons in the lawmen's faces. They were ordered to throw up their hands, and when they complied, the rest of the mob appeared. The angry mob demanded the keys to the jail, but the guard, who was named Bacon, refused, saying he didn't know where they were and wouldn't hand them over if he did. The mob then threatened to kill him. Bacon's wife, who lived at the jail with her husband, upon overhearing the conversation, grew alarmed and said that she knew where the keys were and would get them if the mob promised not to hurt her husband.
She produced the keys, and the mob went into the jail and ordered Grubb to come out. When he complied, they took him to a tree just north of the Pineville square and hanged him, not far from the spot where Dr. Albert Chenoweth had been shot down by an assassin less than two years earlier.