Helen's relationship deepens with Helen resigning from the Wing Governor's post and working as a new liaison officer for prisoners sentenced to life imprisonment, encouraging Nikki to continue her education and appeal against her sentence. Shell's background was examined in some detail, with harrowing scenes describing childhood abuse. Zandra's tragic story finally comes to a close when she dies from a brain tumour. For light relief, Yvonne Atkins (Linda Henry), the gangster's moll, set up "Babes Behind Bars", a sex-hotline staffed by the prisoners with smuggled in mobile phones, playing such characters as "Whiplash Wanda", "Saucy Sonia" and "Vicky the Virgin Bride". Series two ended on a double cliffhanger, with Nikki escaping from Larkhall to be with Helen, leaving Helen to agonise over whether to contact the police, and Shell luring Fenner to her cell for sex, where she reaches under her bed for a broken bottle. Series 3 (2001) Series 3 picks up where Series 2 left off. Fenner and Shell are in bed together and Nikki, dressed in a nurse's uniform, is at Helen's house after escaping. Shell stabs Fenner with a broken bottle that she had brought back from Sylvia Hollamby's (Helen Fraser) party, with Fenner bleeding to death, Shell is in demand and soon finds herself back on top as Top Dog. New officer, the flirtatious and vivacious Gina Rossi arrives on G-Wing and soon locks horns with several inmates and staff alike. Young crack addicted prostitute, Buki Lester (Kim Oliver), arrives and lands Denny in danger when a piercing goes wrong. Nikki also suffers from heartbreak when her on and off relationship with Helen comes to an end, while she is staring her appeal in the face. The third series saw a high turnover of short-term characters and storylines, but also chronicled the spectacular escape of Shell and Denny to the Costa Del Sol in Spain getting revenge on Sylvia and her husband along the way; Yvonne's Top Dog status being challenged by Maxi Purvis (Kerry Norton), the head of the "Peckham Boot Gang"; prison officer Di Barker's (Tracey Wilkinson) struggles as a home carer for her disabled mother and an upbeat finale of Helen and Nikki finally committing to their relationship when Nikki's appeal is successful and she is released from prison. Series 4 (2002) Following on from one of the several cliffhangers from series three, Yvonne in the frame for Virginia O'Kane's (Kate