The Babadook is a 2014 Australian supernatural psychological horror film written and directed by Jennifer Kent in her feature directorial debut, based on her 2005 short film Monster. Starring Essie Davis, Noah Wiseman, Daniel Henshall, Hayley McElhinney, Barbara West, and Ben Winspear, the film follows a widowed single mother who with her son must confront a mysterious humanoid monster in their home.

Psychological horror is a subgenre of horror and psychological fiction with a particular focus on mental, emotional, and psychological states to frighten, disturb, or unsettle its audience. The subgenre frequently overlaps with the related subgenre of psychological thriller, and often uses mystery elements and characters with unstable, unreliable, or disturbed psychological states to enhance the suspense, horror, drama, tension, and paranoia of the setting and plot and to provide an overall creepy, unpleasant, unsettling, or distressing atmosphere.