| | | NOW |
| Mickey | Fitzpatrick | Narrator, police officer, aka Michaela |
| Kacey | Fitzpatrick | Mickey's younger sister, drug addict, missing |
| Eddie | Laffterty | Mickey's new beat partner |
| Sergeant | Ahearn | Mickey's boss, platoon leader |
| Anthony | Palmer | Founder in 1738 of Kensington, neighborhood of Philadelphia, PA, Mickey's son's namesake |
| Jamie, Amanda & Rose | | Prostitutes in Kensington |
| Paula | Mulroney | Prostitute, friend of Kacey's since high school |
| Truman | Dawes | Mickey's former partner |
| | Saab & Jackson | Police medical team |
| | | THEN |
| Gee | O'Brien | Mickey & Kacey's grandmother |
| Gina | Brickhouse | Girl befriended in school by Kacey |
| Fran | Mulroney | Paula Mulroney's brother, drug dealer |
| Jim | | Fran's friend |
| | | NOW |
| Lisa | O'Brien | Mickey & Kacey's mother, Gee's daughter |
| Mrs. | Mahon | Mickey's landlady, formerly Cecilia Kenney, then Sr. Katharine Caritas |
| Bethany | Sarnow | Thomas's babysitter |
| | | THEN |
| Bobby | O'Brien | Cousin of Mickey & Kacey, drug dealer |
| Mr. | Johns | Music teacher at Hanover School, organized field trip for the children to the Nutcracker Ballet |
| | | NOW |
| Davis | Nguyen | Detective from the East Division |
| Katey | Conway | Murder victim |
| Anabel | Castillo | Murder victim |
| Romero | | Alonzo's cat |
| | | THEN |
| Daniel | Fitzpatrick | Mickey & Kacey's father |
| Rose | Zalecki | Police officer at the PAL child care program |
| Officer | Almood | Kacey's favorite officer at PAL |
| Officer Simon | Cleare | Mickey's favorite officer a PAL |
| Gabriel | | Officer Cleare's son |
| | | NOW |
| Ashley | O'Brien | Cousin of Mickey & Kacey, nurse |
| Martha | Lewis | Kacey's former parole officer |
| Lynn | | Gee's younger sister, Ashley's mother |
| Ms. | Powell | Mickey's favorite high school history teacher |
| Ron | O'Brien | Ashley's husband, construction worker |
| Jeremy, Chelsea, Patrick, Dominic | | Ashley & Ron's children |
| Connor | Famisall | Man in photo on Kacey's Facebook page, presumed drug dealer, aka Dock, Connor McClatchie |
| Sheila | McGuire | Facebook friend of Kacey |
| Mike | DiPaolo | Detective in the East Division, friend of Truman |
| Mr. | Wright | Shop owner on the Ave., Truman's father's cousin, knows man Kacey dated |
| Gloria | Peters | Fellow police officer of Mickey |
| Robert | Mulvey, Jr. | Domestic abuse arrestee |
| Thomas | Holme | 1st Surveyor General of PA under William Penn |
| Rich | O'Brien | Gee's younger brother |
| | | THEN |
| | | NOW |
| | | THEN |
| Timothy | Carey | Movie theater ticket-taker who worked with Kacey & dated her after her prison release |
| | | NOW |
| Carlotta & Lila | | Friends of Thomas from his former school |
| Lauren | Spright | Lila's mother |
| Georgia | | Carlotta's mother |
| Patrick | Mahon | Social worker that Mrs. Mahon fell in love with & for whom she left the religious order, then married |
| | | THEN |
| | | NOW |
| Jimmy | Donaghy | Childhood neighbor of Mickey & Kacey who made fun of Kacey |
| Father Steven | | Priest at Holy Redeemer parish |
| Sister Josepha | | Mickey's favorite grade school teacher |
