A serial killer armed with a crossbow pistol is murdering people from their own rooftops. When three young coworkers at a poorly-attended slumber party start hearing footsteps on the roof, they fear the worst.
| Actor | Role |
|---|---|
 Melanie LynskeyLauren | Lauren |
 Sheeri RappaportGina | Gina |
 Mary Lynn RajskubGrace | Grace |
 Will CollyerMan in Black | Man in Black |
| PPhillip DarlingtonSecond News Reporter | Second News Reporter |
 Judith O'DeaAlena Gray | Alena Gray |
| MMarc WadeFirst News Reporter | First News Reporter |
| NNiki MooreTV News Reporter | TV News Reporter |
| SStan GuoChinese Delivery Guy | Chinese Delivery Guy |
| LLucas YoungLauren's Neighbor | Lauren's Neighbor |
| MMichelle Wade ByrdYoung Woman on Couch | Young Woman on Couch |
| MMatt HightshoeYoung Man on Couch | Young Man on Couch |
| DDaniel Defabio(voices) | (voices) |
| TTiffany Hansen(voices) | (voices) |
| JJennifer Hjelm(voices) | (voices) |
| MMark W. Laffittee II(voices) | (voices) |
| RRachelle Lagnado(voices) | (voices) |
| TTom Lisowski(voices) | (voices) |
| WWilliam Mehner(voices) | (voices) |
| MMiguel Muñoz(voices) | (voices) |
| KKarim Nouri(voices) | (voices) |
| JJeffrey Rodriguez(voices) | (voices) |
| SStephanie Thorpe(voices) | (voices) |
| MMarc Wheeler(voices) | (voices) |