Lincolns Assasination

[traveller]

I am not as knowledgable as as many of you when it comes to the Politics of the nineteeth century, but I'm sure that there must have been a fair share of dirty dealings and coverups,etc.
What I'm leading up to is this: Could there be any truth to the thought that Lincoln assasination was actually a plot by Stanton with help from Lafayette Baker. In 1937, Otto Eisenschiml published a book called "Why was Lincoln murdered?" In it he advanced the theory that Edwin Stanton, hiding behind a mask of loyalty, conspired to murder the president and then facilitate the escape of Booth and his coharts, at the same time laying the blame on Davis and the Confederacy.
At about the same time Lincoln was shot was not an attempt made on the life of Seward? Grant and his wife were apparently also on the hit list as they were supposed to accompany Lincoln to Fords that same evening, but had made a change of plans and were on a train to New Jersey.
I wonder if any of you has an opinion on this? Has anything concrete ever been determined, or was it possibly covered up by a political blanket?
Set me straight, Neil! LOL
Traveller