Plot summary
On April 14, 1961, young engineer Peter Corrigan is involved in a discussion with colleagues at the elite Potomac Club (a Gentlemen’s Club) on the question of time travel. After bumping into William, a familiar attendant, on the way out, Peter feels faint. Confused by the gas lamps and horse-drawn carriages on the street, he notices that he's wearing clothes of a much older style and walks home only to find that his home is now a boarding house. In discussion with the strangers he meets there, he discovers that he has been transported back in time to April 14, 1865, the date of the assassination of Abraham Lincoln by John Wilkes Booth.
Corrigan rushes to Ford's Theatre to warn everyone but is arrested for disturbing the peace. Only one officer believes Corrigan, but is overruled by his superior. After he has been held in the police station a short time, a man who states he is a doctor with expertise in mental illness arrives. He introduces himself as Jonathan Wellington and persuades the police to release Corrigan into his custody. Wellington subsequently drugs Corrigan, before leaving and locking the door. Wellington is later identified by the landlady as Booth, which is confirmed by a handkerchief he left behind bearing the initials JWB; meanwhile outside the news is spreading that the president has just been shot.
Corrigan pounds his fist on a window still angry that no one listened and finds he is back in 1961 at the Potomac Club. It seems the same, but there is no longer an attendant named William. Back at the table with his colleagues, he finds that the scholarly discussion has moved from time travel to money, and William is also at the table participating. William says that his money was inherited from his great-grandfather, a policeman who had made a name for himself by predicting the assassination of Lincoln, becoming Chief of Police, then a councilman, and eventually becoming a millionaire through real estate. Corrigan's disbelief is amplified further by the JWB handkerchief he had placed in his pocket. He had in fact changed the past, but not in the way he had intended.
Credits
Adapted from Wikipedia contributors, Back There. Paragraphs and formatting adjusted; illustrations, reference markers, block quotations and non-story material omitted.