With an introduction from Guillmerlo Del Taro, this is a 3 minute film - a single shot and probably the scariest 3 minutes of your life.
Atleast Guillmerlo Del Taro agrees and agreed to produce its feature version. This short film has a small commentary from him in the beginning and you would agree about the craftsmanship and acting in it. Important to note is the production design, the fluid shot taking and lighting that helps in building up the horror.
A young girl wakes up and tells her sister that their mother has returned home and now they have to quietly sneak out.
This film was precursor to a feature in 2013 with the same name Mama and had the same scene, albeit longer and much more in detail.