Light creates truth — but only within its beam
Louisa edits the brightness of her photos to decide which father the world remembers.

Book summary
by Susan Choi
A daughter spends decades chasing the light that vanished with her father off the New England coast.
Topics
Read Part I (Witness) aloud or via Readever’s audio mode to feel the clipped testimony. In Part II (Exposure), switch to dark mode so photos and nautical diagrams pop against the screen, mirroring Louisa’s contact sheets. End with Part III (Afterimage) using Readever’s Compare View to line up multiple witnesses’ timelines.
Things to know before reading
One night in 1987, Louisa and her Korean father walk the breakwater near their Rhode Island town. He carries a flashlight, refuses to swim, and disappears moments later. Louisa is found soaked and mute on the sand. Decades later she’s a photojournalist still haunted by what she can’t remember. Susan Choi braids police transcripts, therapy notes, nautical legends, and Louisa’s reportage to reconstruct the night and the long ripples it created across her American mother, younger brother, and the fishermen who claimed ownership of the shore.
Flashlight is as propulsive as a mystery but ultimately about perception—how light, weather, and grief bend the story you tell about your family.
Flashlight argues that what we see is entangled with who claims the story.
Louisa edits the brightness of her photos to decide which father the world remembers.
Local fishermen insist the sea keeps what it wants, echoing Louisa’s halmeoni’s folktales.
Louisa’s dedication to documenting refugee rescues stems from being the child who couldn’t save her own parent.
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Choi won the National Book Award for Trust Exercise; here she deploys similar structural daring with higher emotional stakes. The novel is rich with coastal detail, queer subplots, and forensic photography—perfect for readers who annotate imagery and motif.
Key idea 1
Louisa edits the brightness of her photos to decide which father the world remembers.
As a photographer, Louisa manipulates exposure to either sanctify or complicate her father’s memory. The technique becomes metaphor: controlling light lets marginalized families fight erasure, but it can also sanitize the messy parts they need to face.
Remember
Key idea 2
Local fishermen insist the sea keeps what it wants, echoing Louisa’s halmeoni’s folktales.
Police reports contradict immigrant rumors, and neither fully explains the drowning. Choi shows how marginalized families survive by blending folklore with fact, creating meaning even when institutions fail.
Remember
Key idea 3
Louisa’s dedication to documenting refugee rescues stems from being the child who couldn’t save her own parent.
By photographing other disappearances at sea, Louisa turns private trauma into public witness. The novel interrogates whether that service heals or reopens the wound.
Remember
"Readers who loved Trust Exercise or Celeste Ng’s mysteries of family history." - "Anyone drawn to coastal fiction, diaspora stories, or hybrid forms mixing transcripts with prose."
Book clubs wanting layered discussions about memory, blame, and forgiveness.
Susan Choi is the author of five novels, including the National Book Award–winning Trust Exercise and the Pulitzer-finalist American Woman. She teaches at Yale and often writes about performance, surveillance, and adolescence.
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"Grab the Flashlight coastal map overlay to follow every harbor and jetty mentioned without leaving the app." - "Enable the ‘Long Exposure’ reading journey to pair Flashlight with One Boat for a maritime double feature."
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