Let's suppose

A hand in a black glove holds a small, open metal case containing two white stones, resting on a person's shoulder in a dimly lit, dark environment. The scene cuts to a woman with long hair looking down with a somber expression, then to a close-up of another woman with braided hair and a dark mark on her forehead, followed by a shot of two women facing each other in a dark, candle-lit room, one with a bruised face, as text for "The Flash" and "The CW" appears.