S4·E4 Fait Accompli

Denny returned to Larkhall...but without Shell. Two new inmates arrived - City high-flyer Cassie Tyler and Roisin Connor; both found it hard to adjust to prison life. After hearing Di Dump him, Barry violently attacked Barbara and then Shaz - questioned later by Mark, Di refused to back-up his lie and exposed him as a woman-beater! Barry later resigned. Neil asked Sylvia to take a computer class for the inmates even though she is totally computer illiterate! Shaz began digging an escape tunnel in the potting shed. Denny pretended to be interested in Al so that she could get information for Yvonne - she succeeded and taped Al's 'confession', landing Al and Maxi in deep water and to Yvonne finally being cleared!