Because the death of Lincoln on the eve of Union victory in the Civil War shocked the nation, it inevitably spawned a litany of theories as to who was involved in the plot to kill him, beyond Booth's small cadre of accomplices. Most are based upon assumption and supposition; some are based upon the fantastic; but nearly all base themselves within one of three main theories: a conspiracy with direct involvment of the Confederate government; a grand conspiracy involving the highest levels of the United States Department of War; and a theory that Booth was ordered to kill Lincoln by the Roman Catholic Church.
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Because the death of Lincoln on the eve of Union victory in the Civil War shocked the nation, it inevitably spawned a litany of theories as to who was involved in the plot to kill him, beyond Booth's small cadre of accomplices. Most are based upon assumption and supposition; some are based upon the fantastic; but nearly all base themselves within one of three main theories: a conspiracy with direct involvment of the Confederate government; a grand conspiracy involving the highest levels of the United States Department of War; and a theory that Booth was ordered to kill Lincoln by the [[Roman Catholicism|Roman Catholic Church]].