A disturbed new neighbor fixates on another woman's husband.
| Actor | Role |
|---|---|
 Barbara NivenDonna Germaine | Donna Germaine |
 Perry KingWilliam Costigan | William Costigan |
 Susan BlakelyJeannie Costigan | Jeannie Costigan |
 Anna SilkAshley Marin | Ashley Marin |
 Linda DarlowGrace Palmer | Grace Palmer |
 Lila Bata-WalshTrish Costigan | Trish Costigan |
 Chuck ShamataDetective Lupo | Detective Lupo |
 Linda E. SmithSally Innes | Sally Innes |
 Alan FawcettThomas | Thomas |
 Caroline RedekoppKelli | Kelli |
 Mark CamachoPhil | Phil |
 Tori HammondRita | Rita |
 Peter Michael DillonChuck | Chuck |
| LLorraine AnsellTippi | Tippi |
| DDiane WhiteAllied Secretary | Allied Secretary |
 AnnaMarie LeaDr. Schneider | Dr. Schneider |
| KKeara JohnstonLittle Donna | Little Donna |
| BBrent DonnellyDonna's father | Donna's father |
| RRick BramucciAnchorman (Uncredited) | Anchorman (Uncredited) |
| AAnastasia KimmettRita's Secretary (Uncredited) | Rita's Secretary (Uncredited) |
| MMaddy LewisForensic Officer (Uncredited) | Forensic Officer (Uncredited) |
| JJon WelchCatering Bartender (Uncredited) | Catering Bartender (Uncredited) |