Alternating between two simultaneous actions — builds tension through perceived simultaneity. Chase and escape cutting back and forth.
You cut back and forth between two scenes—while the hero is running here, the antagonist is loading his weapon there. The tension arises not from a single action, but from the rhythm of the alternation itself. The shorter the cuts become, the denser the atmosphere. This is cross-cutting: a proven tool to make separate locations and times feel like they are happening simultaneously.
In practice, it works like this: You have two or more plotlines—Scene A (escape) and Scene B (pursuit). You don't cut linearly through to the end of A, but alternate: A1—B1—A2—B2—A3—B3. With each cut, you inform the viewer: these things are happening simultaneously. The cutting rhythm becomes a narrative method. A slow alternation (long takes in each scene) feels deliberate, melancholic. A fast alternation (short, concise shots) builds pressure—the heartbeat of the edit.
The classic application: D.W. Griffith perfected this over a hundred years ago—the last-minute rescue before the final blow, cut back and forth until the final collision. But more modern uses also work: the detective in the interrogation room, the accomplice in the burglary next door, both actions running in parallel. Or a wedding and a simultaneous robbery—two worlds that meet in the edit.
Important: The spatial logic must be correct. If your viewer doesn't understand that Scene A and Scene B are actually happening at the same time, you will destroy the emotional impact. Therefore, we often use sound design or music as a binder—a continuous score connects the cuts, turning parallelism into an experience. The axis of action rule and the 180-degree line also play a role: you must maintain spatial orientation, otherwise the montage will seem confusing rather than exciting.
A word of caution from years of editing experience: Cross-cutting is tempting, but also a tool that is easily overused. Used too frequently, it can seem manipulative or even tiring. It works best when it operates contrastively—calm versus movement, light versus dark, hope versus despair. The contrast is the actual drama.