The Twilight Zone - Back There

After debating with a member of his Washington club whether you could go back in time and change major events, Pete Corrigan seems to go back to April 15, 1864 the night Abraham Lincoln was assassinated. He tries his best to warn the authorities of what will happen in a few hours time but it all falls on deaf ears. One person seems interested in what he has to say, but that person may have his own reasons for his behavior