| 1 | Tobias |
| Protagonist |
| | Petra |
| Woman Tobias slept with |
| | Sherman |
| Tobias's childhood pet |
| | Lionel |
| Petra's cat |
| 2 | Millicent |
| Tobias's wife; psychopath. Aka: Penny |
| | Jenna |
| Tobias and Millicent's daughter |
| | Rory |
| Tobias and Millicent's son |
| 3 | Naomi |
George | Victim of Tobias and Millicent |
| | Jason |
| Naomi's recent ex-boyfriend |
| | Lindsay |
| Tobias and Millicent's first victim |
| 4 | Holly |
| Millicent's sister; deceased |
| 5 | Mrs. |
Sheehan | Mother of Jenna's friend |
| | Andy |
Treston | Tobias's friend who bought their house |
| | Trista |
Preston | Andy's wife |
| 10 |
Johannes | Rollins |
Medical examiner of Lindsay's body |
| | Kekona |
| Tobias's neighbor; retired widow |
| 11 |
Owen | Riley |
Serial killer; Millicent's idol |
| 15 |
Josh | |
News reporter |
| 16 |
Leann | |
One of the girls Trista scammed |
| 17 |
Anabelle | Parson |
Tobias's potential victim |
| 18 |
Robin | |
Holly's co-worker; Millicent's victim |
| 20 |
Lizzie | Rhinehart |
Tobias's new neighbor |
| | Max |
Rhinehart | Lizzie's husband |
| 22 |
Eric | |
Bartender |
| 26 |
Nell | Granger |
School principal |
| | Danny |
Turnbull | Jenna's enemy at school |
| 32 |
Dr. | Barrow |
Jenna's doctor |
| 39 |
Chet | Madigan |
Kid caught smoking |
| 40 |
Jane | Doe |
Woman attacked by Owen but escaped |
| 41 |
Dr. | Beige |
Jenna's child psychologist |
| 49 |
Faith | Hammond |
Rory's girlfriend |
| 50 |
Jennifer | Riley |
Owen's sister |
| 52 |
Daniel | |
Rory's friend |
| 52 |
Denise | |
Impostor posing as Jennifer; cashier at Joe's Deli |
| 53 |
Cooper | |
Millicent's colleague; attracted to her |
| | Crystal |
| Babysitter who kissed Tobias; Millicent's victim |
| 54 |
Claire | Wellington |
Detective in charge of Naomi's murder case |
| 60 |
Hank | Hammond |
Faith's father |
| | Corinne |
Hammond | Faith's mother |
| 63 |
Lily | |
Tobias's first kiss |
| 66 |
Donald | Kendrick |
Man who sold Joe's Deli building |
| | Jessica |
Sharpe | Victim |
