A librarian who becomes romantically involved with Jake, providing him with companionship and strength as he carries out his mission in the past.

The owner of a diner who introduces Jake to the time-traveling rabbit-hole, setting Jake on his journey to change historical events.

A janitor at Jake's high school whose tragic past inspires Jake to utilize his time-traveling ability to attempt to improve Harry's life.

The 35th President of the United States, whose assassination becomes the central event Jake aims to prevent by traveling back in time.

The man historically recognized as the assassin of John F. Kennedy, he is closely observed by Jake as he tries to ascertain his motives and actions.

A character speculated to have influenced Lee Harvey Oswald, whose role in the events leading up to the assassination is explored within the narrative.

The father of Harry Dunning, known for his violent tendencies, whom Jake aims to stop from committing a family tragedy.

A man intertwined with Frank Dunning’s past who becomes an unexpected ally to Jake in the effort to prevent an impending crime.

An actual historical figure whose attempted assassination is a significant plot point for Jake's investigation into Lee Harvey Oswald's actions.

Individuals who appear near the time-travel portal, serving as cryptic figures connected to the maintenance and consequences of the time-travel phenomenon.