| 1 | Olivia | Hamilton | Dean's wife. |
| | Dean | Robinson | Olivia's husband. Melanie's therapist and lover. |
| | Liz | Hamilton | Olivia's mother. |
| | Sarah | | Olivia's half-sister. |
| | Leon | | Sarah's husband. |
| | Barbara | | Sarah's mother. |
| | Richard | Walker | Dean's pilot boss. |
| | Mike | Mitchell | A singer and guitarist. Dean's passenger. |
| | Kevin | | Dean's colleague. |
| 3 | Melanie | Brown | A particle physicist who studied Bermuda Triangle. Dean's patient and lover. |
| | Dr. | Fielding | Head of the Physics Department in Columbia. |
| 6 | Brice | Roberts | Mike's friend who studied about Bermuda Triangle. |
| 9 | Cassie | | Olivia's best friend. |
| | Rachel | | Olivia's best friend. |
| | Amanda | | Olivia's friend. |
| | Gabriel | Morrison | Olivia's ex-boyfriend. |
| | Todd | | One of Olivia's friends. |
| 11 | John | Matthews | Dean's psych mentor. |
| | Lynn | | Dean's aunt. |
| 13 | Caroline | Weaver | Dean's psych boss. |
| | Oscar | Hamilton | One of the richest businessmen. Olivia's father. |
| | Brendan | Davies | Olivia's cameraman. |
| 15 | Ziggy | | Olivia's dog. |
| 16 | James | | Liz's brother. |
| | Jan | | James's wife. |
| 20 | Detective | Smith | The detective who interviewed Dean. |
| | Detective | Mason | Detective Smith's partner. |
| 21 | Serena | | The flight attendant. |
| | Captain | Taylor | The pilot captain. |
| 23 | Rose | Robinson | Dean and Olivia's daughter. |
| | Amelia | | Rachel's daughter. |
| | Thomas | | Gabriel's band mates. |
| 26 | Joel | Morrison | Olivia and Gabriel's son. |
| | Mary Beth | | Rose's friend. |
| | Detective | Johnson | The detective who interviewed Olivia. |
| | Detective | Russo | Detective Johnson's partner. |
| 29 | Ethan | Morrison | Gabriel and Olivia's 2nd son. |
| | Angie | | Joel's girlfriend. |
| 30 | Susie | | Rose's alleged sister. |
| 31 | Patricia | | Susie's mother. |
