The new arrival of a woman named Mary Todd wedges a rift between Abraham Lincoln and Joshua Speed, but they must resolve their differences if they stand any chance of cracking one of the most harrowing murder cases they have ever faced.In the winter of 1839, a sensational disappearance rocks Springfield, Illinois, as headlines announce a local man has accused his two brothers of murder. Not one to pass up an opportunity, Abraham Lincoln takes up the case of the accused with the assistance of his best friend Joshua Speed to search for evidence of innocence.But just as soon as they begin, Lincoln and Speed find their friendship at grave risk of rupture as they vie for the hand a beautiful new arrival in town: an ambitious, outspoken young woman named Mary Todd. As the trial arrives, can Lincoln and Speed put aside their differences to work together for justice once more? An innocent man's life may be in the balance - and nothing is as it seems.Re-imagining one of the greatest unsolved murder mysteries from Abraham Lincoln's real-life trial cases, A House Divided is the most captivating Lincoln and Speed mystery yet from expert Lincoln scholar Jonathan F. Putnam.