About the relationship between Dean, a young deaf man who is accused of murdering his flatmate, and Penny, the sign language interpreter assigned to his case.
| Actor | Role |
|---|---|
 Susan LynchPenny | Penny |
 Joseph MawleDean Whittingham | Dean Whittingham |
 Neil StukeChris Groves | Chris Groves |
 Brendan CoyleDI Dave Cox | DI Dave Cox |
 Eve MylesDC Sarah McGowan | DC Sarah McGowan |
| DDiana MartinHeather | Heather |
| JJoanna DunbarJak | Jak |
 Susannah WiseAnna | Anna |
 Michael ColganConnor | Connor |
| DDemelza RandallMagda | Magda |
 Stephanie StreetDuty Solicitor | Duty Solicitor |