G Wing say a final farewell to Yvonne while Jim gets another shock when Lauran turns up on his doorstep asking questions. Tanya makes Sylvia an offer she can't refuse & Neil gets offered a new job from an unexpected source.

A full-scale investigation is launched into Yvonne's death, and while Jim finds it hard not to crack, Colin appears to be the prime suspect. The wing is shocked by Yvonne's death, but Julie J has a bigger shock in store. The new wing governor introduces herself to G Wing, giving the women yet another surprise. New inmate Darlene is quickly befriended by Phyl, who is interested in her drug stash.

With Bev still on the hospital wing after her overdose, Frances is determined to crack down on the drug dealers, keeping Phyl under 24-hour surveillance until she confesses. Frances gets the handcuffs out for Colin Di gets closer to Jim, but his mind is still on Yvonne Atkins - is he going mad ?! Julie S decides that since she's on 'death row', she may as well take Fenner with her!... but only manages to slash his hand with a knife! Selena is still determined to get Kris out of prison, but things don't go as she planned. Frances announces drug tests for the whole prison. Fenner goes mad and...erm... flashes more than his keys!

A Muslim woman convicted of murdering a relative protests her innocence and ends up climbing onto the roof of G Wing to continue her protest... but who will end up critically injured? The inmates are still shocked at Jim's strange behaviour, but they soon discover that it is only the beginning! Sylvia is sent on a racism course after being reported for making racist remarks by a colleague. Dr. Nicholson finally makes a correct diagnosis !!

All the officers are ordered to undergo drug tests as well as the prisoners, leaving Colin in a tight spot. The results of the drug tests concern Neil but not for the reason you'd expect! Natalie Buxton returns to G-Wing having been convicted of child prostitution, but has to cope with Frances, who is incensed at Natalie's return to Larkhall. Will Natalie be able to use her cunning and manipulative skills to win over the inmates?

Glamour hits Larkhall with the arrival of Tanya Turner, who has been jailed for possession of Class A drugs, and who quickly decides to cosy up to Darlene when she arrives. Neil is furious over the officers' drug tests, and Frances soon confronts Colin about them. Selena leaves for Canada to try and convince Milly to return and clear her sister's name. And a bout of sickness and vomiting hits the wing, with Al suffering very badly.

Someone is poisoning people on G Wing, and suspicion immediately falls on Tanya Turner, as no one was ill until she arrived. Fearful for her life, Tanya tries to come up with a way to get out of prison and makes a deal with a Yardie gang leader. Fenner returns to G Wing, and is back to his old self again. Natalie forces Phyl and Bev to let her in on their plans, while Tina is convinced she killed Al by stealing the hooch.