Siren (stylized as SiREN) is a 2016 American horror film written by Ben Collins and Luke Piotrowski, and directed by Gregg Bishop. It is the first spin-off film in the V/H/S franchise and feature-length adaptation of "Amateur Night", David Bruckner's segment from the 2012 anthology horror film V/H/S. The film focuses on Jonah (Chase Williamson) and his groomsmen the day before his wedding, as they embark on a wild night of partying and debauchery. The party, however, becomes a savage fight for survival when they unwittingly unleash a fabled predator upon the festivities.

Plot

A mystic and a sheriff investigate a séance in a church that has gone wrong, resulting in the deaths of those who were present during the ceremony. The sheriff is killed by the creature that was summoned, which appears as a young girl. The mystic fastens a shackle around her ankle.