“The Shadow in the Helix” is a moving and respectful portrait of a female scientist, crafted by a female director who brings both precision and empathy to the screen. The film carries a subtle ache (the sense that its subject did not live long enough to witness better days). Visually consistent and stylish, with narration and dialogue that are sharp and perfectly timed, it wastes not a single moment. A strong narrative arc and impeccable storytelling make this a powerful and memorable documentary.