After a night of partying, Emily Lancaster is crippled by shame. Brought up in a fanatically religious household, she believes she has sinned beyond forgiveness and takes her own life, sending shockwaves throughout Hallberg University.

As those who knew her mourn the tragic loss, they are plagued with terrible nightmares and strange encounters with a mysterious woman. Students and police scramble as an outbreak of horrific murders ensue.

Someone...or something...is targeting the students involved in Emily's suicide, mercilessly pursuing them and asking the question...

Are you a sinner?