Categorize the given story into one of the following categories: comedy, horror, sci-fi, drama, mystery.
Liz is a young woman who has been tasked with discovering the truth about what happened to her childhood best friend. She embarks on a journey to uncover long-buried secrets and solve mysteries.
The given story can be categorized as mystery.
Complete the following task based on the instruction and optional input provided.### Instruction:
Categorize the given story into one of the following categories: comedy, horror, sci-fi, drama, mystery.

### Input:
Liz is a young woman who has been tasked with discovering the truth about what happened to her childhood best friend. She embarks on a journey to uncover long-buried secrets and solve mysteries.

### Output:
The given story can be categorized as mystery.