As an initiation rite into Alpha Sigma Rho fraternity, four pledges must spend a night in Garth Manor, twelve years to the day after the previous resident murdered his entire family.
| Actor | Role |
|---|---|
 Linda BlairMarti Gaines | Marti Gaines |
 Vincent Van PattenSeth | Seth |
 Peter BartonJeff Reed | Jeff Reed |
 Suki GoodwinDenise Dunsmore | Denise Dunsmore |
 Kevin BrophyPeter Bennett | Peter Bennett |
 Jenny NeumannMay | May |
| JJimmy SturtevantScott | Scott |
| HHal RalstonOlder Cop | Older Cop |
| CCarey FoxYounger Cop | Younger Cop |
| RRon GansDriver (as Ronald Gans) | Driver (as Ronald Gans) |
| GGloria HeilmanParty Girl | Party Girl |