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.

After being arrested for murder, Tanya is questioned about poisoning Al, but the case against her looks weak and other inmates are soon pulled in for questioning. When the poison is traced back to the rhubarb, the Costa Cons try to get rid of incriminating evidence - but it appears to be too late. The Julies enjoy a birthday party to remember. Frances and Tanya forge an unlikely alliance when a plan to get to Tanya comes to light

Jim receives a taste of his own medicine in a prison cell of his own... How will he get out of this situation!? On G-Wing, Governor Neil Grayling starts to make changes and announces that he will take full responsibility for the wing. Two newcomers arrive - Janine is furious with her partner-in-crime Arun for confessing to their credit card scam. Tina O'Kane hates her new freedom and tries her best to get back inside... but will she end up on G-wing or on another wing? Bev and Phyl plan to teach Bodybag a lesson. Top Dog Natalie Buxton is rubbing up her fellow inmates the wrong way.

Jim uses all his manipulative skills to get himself out of jail, but will Di realsie he is using her? Everyone on G-Wing is up in arms about the extortion racket Natalie Buxton and her sidekick Darlene Cake are running. Jim blackmails Neil Grayling into giving him the Wing Governor's job, and starts by sacking the two Julies from the kitchen. Phyl and Bev jump at the chance to replace them, but they're unprepared for all the hard work. Sylvia is sure that she has a mysterious illness - Dr Nicholson is unterested until a letter arrives for Sylvia...!

Jim is desperately trying to avoid sex with Di - but how long can he hold her off and what lengths will he go to not to have children?! Natalie Buxton seems to have everyone at Larkhall in her debt, she has even scored a cushy job in the library - the perfect place to attend to Jim's needs. She is far from discreet though, which infuriates Di! The two Julies get permission to open the G-Wing hair and beauty salon but aren't very optimistic about the idea. Naive Arun walks into a violent trap set by Natalie and Janine. Dr Nicholson is still fawning over Sylvia Hollamby.

***Spoiler*** The press are swarming outside the gates of Larkhall, awaiting the arrival of Laura Canning, an 18-year-old convicted of stabbing her mother to death. Natalie and Darlene demand some beauty treatment - but the two Julies get their own back. Phyl and Bev have a scam going with the bakery delivery man. Malcolm proposes to Sylvia - who is ecstatic, little realising that it's her cash he's after.