'Clayface trailer': Fans catch creepy detail hidden in teaser

The Clayface trailer is out, and fans gasp as the footage reveals a nightmarish insight into DC's new horror territory.

Matt Hagen – played by Tom Rhys Harries – who is depicted as an aspiring actor, lies on a hospital bed while his face is horribly disfigured.

His injuries were born out of a savage attack, forcing his career to go sideways. Yet as the creepy trailer moves on, a detail spotted by an eagle-eyed viewer stands out as super-disturbing.

Near the end of the trailer, Hagen is lying in a bathtub, and in that moment, he wipes his face, revealing a blank expression.

Yet what a sharp-eyed viewer noticed was that the tub he was lying in was not a separate tub; Hagen himself was the tub.

Though no hints had been given – in the trailer – to the Batman, where the shapeshifter is an iconic villain.

The film's logline introduces Clayface as "the Gotham City villain and one man’s horrifying descent from rising Hollywood star to revenge-filled monster in a story that explores the loss of one’s identity and humanity, corrosive love, and the dark underbelly of scientific ambition."

Clayface hits cinemas on Oct 21.