Reaper — [s1e17]

Lionel Luthor sends an auditor, Dominic Santori, to investigate Lex Luthor , exposing Lex's secret investigation into Clark's family.

Jonathan Kent and Clark struggle with teenage rebellion and miscommunication.

Unlike many villains, Tyler is portrayed sympathetically; he eventually takes his own life when he realizes his mother is still alive and would be horrified by what he has become. [S1E17] Reaper

The episode is noted for its dark tone, starting with Tyler attempting to assist his own mother's suicide before gaining his powers. It explores the heavy ethics of "mercy killing," a departure from the show's usual teen drama.

Tyler’s power is visually striking, turning biological matter into ash instantly. Lionel Luthor sends an auditor, Dominic Santori, to

is often cited by fans as one of the more grounded and emotional episodes of the first season because it forces Clark to confront a villain whose intentions—though misguided—come from a place of compassion rather than malice.

During a confrontation, Lex tells Clark, "When my father dies, kings will come to his funeral, but when your father dies, his friends will come," highlighting the different values of their respective families. The episode is noted for its dark tone,

A major highlight is the contrast between various father-son relationships: