Meet Lindy Lonsberry: The Woman Behind Heartland’s Most Dangerous Amy Fleming Stunts

No one questions Amber Marshall‘s credibility as a horsewoman. After 19 seasons as Amy Fleming on Heartland, she’s more than earned it.

But if you’ve ever held your breath watching Amy gallop full-speed through dense brush, or clear a jump that looks one misstep away from disaster — that wasn’t Marshall.

That was Lindy Lonsberry.

For nearly two decades, Lonsberry hasn’t just been Marshall’s stunt double. On set, the crew calls her the second half of Amy Fleming.

It’s not just about riding skill. The two have developed a silent shorthand that keeps production moving and the illusion intact. When a horse gets spooked or a stunt starts to feel too close to the edge, Marshall doesn’t call for a double. She just catches Lonsberry’s eye across set. One small nod, and they switch. No announcement. No reset. Most people watching at home never notice.

The most fascinating part might be what happens to the horses themselves.

Take Phoenix — the horse fans know and love as Spartan. Lonsberry says he knows the difference the second she takes the reins. His ears prick forward. His whole body tightens. She calls it “stunt mode,” like he can feel the energy shift before the cameras even roll and braces for what’s coming.

And that signature braid? It’s not just a character choice.

During action sequences, Amy’s plait is a deliberate continuity trick. At a full gallop, Lonsberry’s braid moves identically to Marshall’s, giving the editors the visual match they need to cut between the two riders without breaking the scene. One profile shot at speed would give the swap away. The braid makes sure it doesn’t.

Lonsberry doesn’t just ride fast. She studies Marshall — how she sits in the saddle, how she holds the reins, where she puts her weight. It’s a performance inside a performance, precise enough that even when you’re looking for it, you’ll miss it.

As Season 19 airs on UP Faith & Family and talk about Season 20 starts to build, rewatch those big riding sequences a little closer. Watch the braid swinging at a gallop. Watch for that moment right before a difficult stunt when the horse’s energy changes.

Lindy Lonsberry has taken the falls, the risks, and the hits that never made it into the credits. So much of the fearlessness you see in Amy Fleming? That part is hers.