10 Horror Movies With Amazing Concepts But TERRIBLE Execution

4. Army Of The Dead

Credit where credit is due, Zack Snyder at least came up with a unique hook for a new zombie movie, by making it an undead heist film set in the heart of Las Vegas.

Couple this with a killer ensemble cast and a permissive R rating, and it seemed like Snyder - who, remember, delivered a solid remake of Dawn of the Dead against considerable odds - had everything he needed to deliver a diverting zombie movie.

Except a good script, that is.

Army of the Dead is, to be kind, a mess - a brutally overlong 148-minute slog where Snyder seemingly threw every errant, half-sketched idea he had into the mix. 

Despite the bursts of entertainingly grisly action, protagonist Kate (Ella Purnell) is absolutely maddening, and Snyder's decision to shoot the entire movie on a razor-thin blade of focus proved more distracting and frustrating than artistically distinct.

A sequel, Planet of the Dead, is nevertheless in development, though given the mediocre viewing figures for Snyder's recent Rebel Moon duology, would it shock anyone if it never came to pass?