| Nancy | Akers | Receptionist at St. Brendan's school |
| Deanna | Baxter | Cesar's girlfriend, aka DeeDee |
| John | Bergen | Cass' 1st boss on the police force |
| Thea | Bey | Father Ray's housekeeper |
| | Billings | Patrol officer guarding the police barricade at the beach park |
| Anton | Bolek | Parish school janitor |
| Bear | Burgett | Runs the Sanctuary food kitchen near St. Brendan's |
| Sean | Covey | Barb's brother, aka Booster |
| Sister Barbara | Covey | Childhood friend of Cass & Whip who became a nun, aka Barb |
| Rev. Ellis | Crowell | Minister at Gentle Peace Outreach Center |
| George | Cummings | New parishioner at St. Brendan's who had disagreements with Father Ray |
| Janice | Cummings | George's wife |
| Skeeter | Cummings | George & Janice's daughter |
| Lt. | Evans | Ben & Cass's former boss |
| | Farraday | Police officer lacking in skill & temperament |
| | Fisher | Lieutenant at the police station |
| Yancy | Gantt | GI, Old Sarge |
| Lillian | Gibson | Next-door neighbor of the Cummings |
| | Gleason | Police officer at Ben's station who likes herbal tea |
| | Hallstrom | Police officer at Ben's station |
| Father Ray | Heaton | Activist priest at St. Brendan's Church who asks for Cass' help, aka Pop |
| Paul | Helms | Ben Mickerson's new partner |
| Nate | Kallish | Stuart & Marie's 4-year-old son |
| Stuart & Marie | Kallish | 2nd floor tenants in Cass' building |
| Bo | Kliest | Police officer who once worked with Ben |
| Cesar | Luna | Low-level gangbanger (Scorpion) found dead in St. Brendan's along with Father Ray |
| Irma | Luna | Cesar's mother |
| Adam | Lychee | Bullied child at Cass' grade school |
| Charles | Mayo, Jr. | Cook at Creole's, former crook, child-hood friend of Cass', aka Whip |
| Det. Ben | Mickerson | Cass' partner in the Chicago PD |
| Father | Pascoe | Father Ray's assistant |
| Hector | Perez | Member in Scorpion gang who last saw Cesar before his death |
| Jimmy | Pick | Murder suspect Cass & Ben are after |
| Cass | Raines | Former Chicago cop, PI, aka Bean |
| Sela | Raines | Theodore's 3rd & current wife |
| Theodore | Raines | Cass' father, absent for 20 years, now residing in St. Louis |
| Whitford | Raines | Theodore & Sela's son |
| Maisie | Rose | Former store owner who sold alcohol & drug paraphernalia to kids, driven out of business by Father Ray, stole his Bible |
| Reynauld | Rose | Maisie's son, incarcerated |
| | Smitty | Fellow Chicago police officer |
| | Solis, Lyles, Grimes | Fellow officers |
| Muna Lee | Steele | Waitress at Deek's Diner |
| Mrs. | Strickley | Elderly wheelchair-bound woman knocked over by man who ran by her |
| | Tomlinson | Officer at the scene at the beach park, Billings' superior |
| Vince | Turner | Bo's partner |
| Father | Vasquez | Priest at St. Teresa's school |
| Mrs. | Vincent | 1st floor tenant in Cass' building |
| Dr. Nelson | Voigt | Police psychologist |
| Eli | Weber | Farraday's new partner |
| Buster | | Ben's English bulldog |
| Chester | | Homeless man who works at the Angel Arms shelter for the homeless |
| Cleopatra | | Homeless woman |
| Ernie | | Dead homeless man who had traded his knife for GI's squat |
| Flabby Guard & Tiny Guard |
| Hospital security officers who chased & caught Cass in the hospital stairwell |
| Fleece | | Dreadlocked black man wearing a fleece jacket who killed Yancy Gantt in the hospital, aka Amon Jarvis |
| Ignacio | | One of Hector Perez's gang members |
| Josephina | | Marisol's friend |
| Marcus | | Cass' former boyfriend |
| Marisol | | Hector's sister |
| Old Sarge | | Homeless man who attacked Cass at the rectory then ran away |
| Pouch | | Friend of Whip & Barb, ex-con, pickpocket |
| Raffi | | Hector's nephew |
| Rashid | | Homeless man who works at the Angel Arms shelter for the homeless |
| Trina | | Teenager volunteering at Gentle Peace Outreach, knew Deanna |