Without a Trace (2002)

S4E10 When Darkness Falls

Title: When Darkness Falls Plot: Sam takes on a task for a friend, seeking to uncover the identity of a young woman who has lost her memory and was discovered in designer attire by two officers. Their search reveals her connection to a theater production and an unfortunate mugging incident, eventually unearthing details from her past that may explain her memory loss. Meanwhile, Jack steps away from his job to care for his father, whose Alzheimer's is worsening alongside kidney failure. Despite Jack's efforts to persuade Frank to seek treatment, time runs out, forcing Jack to bid farewell to his father.