Star Trek: The Next Generation (1987)

S07E07 Dark Page

Stardate: 47254.1. Lwaxana Troi suddenly falls ill due to a long-buried traumatic memory. The key to her recovery lies in Deanna's ability to delve into her mother's subconscious and uncover the source of her affliction. As Deanna navigates through the depths of Lwaxana's mind, she discovers that the hidden truth is far more profound and intricate than she had anticipated.