Leo refuses to back down in his search for the killers of the young boy.
| Name | Type | Role | |
|---|---|---|---|
| Greg Dinner | Writer | ||
| Steve Toussaint | Guest Star | Pastor Funmi Lambo | |
| Sharlene Whyte | Guest Star | Sara Okonjo | |
| Damilola Anderson | Guest Star | Sacrificial Victim | |
| Robert McIntosh | Guest Star | Father Anthony Reid | |
| Cosima Littlewood | Guest Star | Cassie | |
| Diana Walker | Guest Star | Angry Woman | |
| Jack Finerty | Guest Star | Billy | |
| Joe Dixon | Guest Star | DI Simon Rush | |
| Diana Kent | Guest Star | Marie Williams | |
| Anthony Edridge | Guest Star | Dr Hilary Dawson | |
| Yemi Goodman Ajibade | Guest Star | Samson Moyo | |
| Mark Anthony Brighton | Guest Star | Angry Man | |
| Michael Byrne | Guest Star | Father Donal Kennedy | |
| Tom McKay | Guest Star | DS Jimmy Case | |
| Joseph Morgan | Guest Star | Matthew Williams | |
| David Perkins | Guest Star | Young Collins | |
| Nick Oshikanlu | Guest Star | Benga Moyo | |
| Cate Fowler | Guest Star | Senior Police Commander | |
| Matthew Wait | Guest Star | DI Sam James | |
| Jude Akuwudike | Guest Star | Willi | |
| Daniel Betts | Guest Star | Seth Collins | |
| Joseph Godfrey | Guest Star | Child in Leo's Hospital | |
| Alan Westaway | Guest Star | DI Elwood Brand | |
| Adjoa Andoh | Guest Star | Dr Lami Falase | |
| Ciaran Sandy | Guest Star | Laurence Likwala | |
| Joy Richardson | Guest Star | Auntie Grace Esan | |
| Jack Chissick | Guest Star | Jewish Mourner | |
| Brendan Maher | Director |