Alien/creature in attic hiding under door

This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?

Where do you find love? Sometimes all you need is a sign.

Trying to escape her broken past, Sarah O’Neill is building a new life on the fringes of a backwood rural town with her young son Chris. A terrifying encounter with a mysterious neighbour shatters her fragile security, throwing Sarah into a spiralling nightmare of paranoia and mistrust, as she tries to uncover if the disturbing changes in her little boy are connected to an ominous sinkhole buried deep in the forest that borders their home.

While exploring the neighboring woods, 13-year-old John discovers an unfinished bunker — a deep hole in the ground. Seemingly without provocation, he drugs his affluent parents and older sister and drags their unconscious bodies into the bunker, where he holds them captive. As they anxiously wait for John to free them from the hole, the boy returns home, where he can finally do what he wants.

Set in an established wealthy home, a middle aged woman is awoken by the sounds of an intruder. As she follows the unsettling sounds, she walks into a nightmare. A nightmare whose dreamer is unknown.

There's something in the attic...

Ata, an experienced hunter claims to have lost his wife abducted by aliens.

A woman finds a horrifying thing living in her attic, but the real monster has yet to be discovered.

A woman is chased into her apartment by an unknown entity.

A former astronaut believes himself the doorway to a terrifying alien invasion.