Since Al has cancer, he convinces Jake that he has to go back into the past and finish the work he’s started. He has files and research about all sorts of people implicated in the plot, from Lee Harvey Oswald to CIA operatives and Russian émigrés. The problem is, the past doesn’t like to be changed, and when Jake attempts it he is attacked by careening cars, falling chandeliers, and an army of cockroaches bent on his destruction.
Source: 11.22.63 review – sumptuous Stephen King adaptation bodes well for Hulu | Film | The Guardian