When it comes to thrillers, villains are a dime a dozen. You’ve got monsters, madmen and the occasional alien or two.

In “Unstoppable,” however, the bad guy is no mutated dinosaur or crazy ex.

Instead, it’s a runaway train barreling through a series of Pennsylvania towns at speeds of more than 70 miles per hour — a disturbingly real possibility that makes Freddy Krueger look as intimidating as Fred Flinstone.

“Unstoppable” was released on DVD Feb. 15.

The film wastes no time jumping straight into the action. In the first 10 minutes, we see a lazy engineer (Ethan Suplee) fail to connect a locomotive’s air hose.

The result is a coaster train packing highly hazardous, flammable cargo. With no one on board, the locomotive essentially becomes a deadly missile, carrying more than 10 million pounds of combustible material straight toward the heavily populated town of Stanton.

Caught up in the chaos, veteran train engineer Frank Barnes (Denzel Washington) and a rookie conductor Will Colson (Chris Pine) set into motion a plan to stop the train before it causes mass destruction.

The result is a breathtaking, thrill-a-minute action flick with enough explosions and high-speed chases to keep you on the edge of your seat from start to finish.

Although “Unstoppable” lasts only an hour and a half, not a second of the film is wasted.

While most thrillers are high on action and low on heart, director Tony Scott manages to flawlessly combine the two for a shockingly well-rounded film.

If you missed the “Unstoppable” train when it first rolled into theaters, you best jump onto it now that it’s made a stop at your local DVD retailer.

“Unstoppable” is rated PG-13 for sequences of action and peril, and strong language.

Rating: A-