After a sleepless night, Lena grows paranoid that people are following her. 

Mysterious circumstances leave James in possession of a strange audio file with even stranger properties.

Anxious about meeting a group of new people, Alyssa hesitantly arrives at a party, unaware that something more sinister lies beneath the surface. 

Chaos washes over Ivan's city as he wakes up to find his own shadow missing. 

Sable loves her toys, but something in the attic of her new home wants to play with them, too.

In Troubled Youth's first Halloween episode, Heath's grandparents teach him how to measure the distance of a thunderstorm... with unexpected results.

Stuck in traffic, Charlie begins to hear and see things that can't possibly be there. 

Clark experiences the most unpleasant escalator ride of his life. 

A new-and-improved Sam invites a boy over to her house, as long as he avoids her basement. 

Alan's cat seems to have a hidden agenda, and he's determined to uncover it.