Tracey sees her new role of Di Barker as a "dizzy, kind natured, but gullible officer. She wants to be able to get on with the prisoners and believes that everyone is equal. She's not very bright but is very committed to her job, which she just loves".

"She works hard and keeps a friendly manner with her fellow officers and prisoners. Di is very keen on one of her co workers, Dominic McAllister…"

We discover that Di lives at home with her very sick and demanding mother who suffers from altzheimers. When thinking about this difficult home situation "I drew on my own step-mother's experiences. She had lived with her mother who had altzheimers for three years. For Di, I see that her prison is when she's at home rather than when she's at work - her escape is coming in to work and home is her real prison".