Tom keeps disappearing throughout Last Christmas because he is, in fact, a ghost. His transient presence is a key element of the film's central twist.
The Ethereal Nature of Tom
Tom's frequent and unexplained disappearances are a mysterious aspect of his character from the moment he is introduced. He appears to Kate unexpectedly, offers her support and advice, and then vanishes just as abruptly. This enigmatic behavior is not merely a quirk of his personality but an inherent characteristic of his spectral existence.
His inability to maintain a consistent physical presence or be seen by others beyond Kate (and sometimes briefly by others who quickly forget him) is a direct consequence of his true state. His appearances often coincide with moments when Kate needs guidance or a push towards self-improvement, acting more like a guiding spirit than a conventional human interaction.
Tom's Tragic Backstory
The reason Tom is a ghost, and therefore prone to disappearing, stems from a tragic event that occurred one year before the film's primary timeline. Tom died in a fatal accident:
- Circumstance of Death: He was riding his bicycle in the street.
- Cause of Death: He was hit by a truck.
This unfortunate incident led to his death, making him a spectral presence throughout the film. The revelation of his death provides the ultimate explanation for his elusive nature, his sudden appearances and disappearances, and his somewhat detached yet profound connection with Kate. He is not just a mysterious stranger but a spiritual embodiment of the heart Kate received, guiding her to a healthier, happier life.
Implications of His Ghostly Presence
Understanding Tom's ghostly nature clarifies several puzzling elements of the film:
- Unpredictable Appearances: He only appears when he chooses to, or when Kate is particularly receptive to him.
- Lack of Physical Interaction: Tom rarely, if ever, shares food, touches objects, or interacts with other characters in a sustained, tangible way that would confirm his physical presence.
- Symbolic Role: His presence serves a deeper, symbolic purpose, representing the life and heart that Kate received through a transplant.
His constant disappearing acts are not plot holes but rather deliberate clues that build towards the film's poignant twist ending, revealing his true status as a spirit.
