Name the time shift at the first point of ambiguity
A reader should recognize the move into the past before interpreting the scene. A heading suffix works for one scene; explicit start and end markers are safer for a sequence.
Make the time shift explicit in a scene heading or action cue, then clearly return to the present when the transition could otherwise be missed.
Direct answer
For a one-scene flashback, name the time shift in the scene heading with TEN YEARS EARLIER, a date, or another specific cue, then make the returning heading equally clear with PRESENT when needed. For a brief image, an action cue can be enough. If more than one scene sits in the past, use a clearly labeled FLASHBACK / END FLASHBACK block so the reader never has to guess which timeline is active.
On the page
EXT. HARBOR ROAD - NIGHT - TEN YEARS EARLIER
A younger Mara watches the ferry pull away.
MARA
Wait.
INT. LAST TRAIN - NIGHT - PRESENT
The closing doors snap Mara back to the present.
Evidence weight
A reader should recognize the move into the past before interpreting the scene. A heading suffix works for one scene; explicit start and end markers are safer for a sequence.
Some writers italicize flashbacks or use transitions such as BACK TO PRESENT. Those devices can help, but they are optional. Typography alone is a weak timeline signal because it may be lost in import or export.
Not one rigid template
Add FLASHBACK, YEARS EARLIER, or a specific date to the scene heading when one scene carries the time shift and the return is obvious from the next heading.
Use FLASHBACK / END FLASHBACK around several scenes or when the present-day frame resumes without a naturally explanatory heading.
A short action cue such as A FLASH OF: can carry a single image without manufacturing a complete scene. Return immediately to the ongoing action.
Reader and handoff friction
Choose for the recipient
Use the least notation that makes the timeline immediate. A reader should not need color, revision marks, or production metadata to understand the transition.
Past-period scenes often affect cast, wardrobe, art, and location breakdowns. Keep full scene headings where those distinctions need to remain visible to production systems.
In Plot, put a one-scene time shift straight into its Scene Heading, as in TEN YEARS EARLIER, and make the return just as explicit — the scene list then shows exactly where the story leaves the present and where it comes back. For a longer sequence, bracket ordinary scenes with Action markers.
Asked next
It works for a single scene, but a concrete cue such as TEN YEARS EARLIER or a date usually tells the reader more. When several past scenes run together, bracket them with FLASHBACK and END FLASHBACK so the active timeline is never in doubt.
Make the return as explicit as the departure: a scene heading marked PRESENT, an END FLASHBACK line, or a heading whose time and place are unmistakably current. The reader should never learn a scene was in the past only after misreading it.
The mechanics are similar — mark where it starts and where reality resumes — but label a dream as a dream. Stories usually treat memory and imagination differently, and a reader who mistakes one for the other misreads the scene.
Flashback
A scene or sequence set in earlier story time. Scripts mark the shift with FLASHBACK (or similar) and return with BACK TO SCENE or a clear present-day slugline.
Scene heading (slugline)
The line that opens a scene: interior or exterior, location, and time of day — for example, INT. KITCHEN — NIGHT. It orients the reader and anchors production breakdowns.
Transition
An editing instruction between scenes — CUT TO:, DISSOLVE TO:, SMASH CUT TO:. Modern specs use them rarely; most cuts are assumed.
Browse the screenplay formatting reference
Rendered examples and accepted variations for common screenplay situations
Dream sequences
Establish who is dreaming, mark where the dream begins and ends, and show the return to waking life so a dream is never mistaken for the story's reality.
Continuous action & time jumps
Use CONTINUOUS for unbroken movement into a new location, SAME for simultaneous time, and a plain action beat or new time label for an actual jump forward.
Montage
Signal the montage, organize its visual beats in action, and end it clearly when the reader might not otherwise know where ordinary scene flow resumes.