Meanwhile, an attractive doctor, Sandra Malik, was getting close to Brandon. They started to see each other and of course, Cathy couldn't have that. After Cathy assaulted Sandra after a confrontation over Brandon, Sandra decided to make an official complaint against PC Bradford and wanted her chucked out of the Met. Cathy retaliated by fitting Dr. Malik up, by twisting things and stealing Malik's mobile phone. She then made abusive phone calls to Sun Hill from Malik's phone and then conveniently 'traced' the number. The number matched Sandra Malik's phone. All she had to do now, was to put the phone back in Sandra's office at St. Hugh's, and all was done.

When Tanya Kane (Brandon's estranged wife) was planning to take a job in Scotland and take Zoe and Jordan Kane with her, Cathy framed Tanya for Drink Driving. "No licence - no job" confessed Cathy in her last hour. When Tanya came to Cathy for advice about getting back with Brandon, their meeting ended up with Tanya Kane, unconscious at the bottom of a car park staircase. Cathy nearly lost it and was nearly caught, but managed to smuggle incriminating CCTV footage of her at the scene. But it would be this CCTV tape that would prove her undoing.

Sadly Tanya Kane died of her injuries and no one was arrested. The coroner decided it was an accident and Brandon decided to put the whole event behind him. Cathy was safe. For now.

After Dr. Preston's suicide, Cathy came to help PC Polly Page. Cathy made her lie in her statement and say that she came home and found Owen Preston dead rather than the truth. Dr. Preston's death was ruled as a suicide and it was only when a nosy relative of Owen Preston put two and two together and came up with five, did the CPS look into the case deeper and decided to arrest Polly Page of murder. At this time, Polly was seeing a nice man called Max Wyman whom she was very fond of. When Polly was arrested, Cathy became close to Max (he was very rich) and then, with Max mesmerised with her, Max decided to propose to Cathy. All were...surprised to find out that cold, loner Cathy had got engaged but none the less were happy for her. Cathy was over the moon - just think of the money.

PC Bradford, under oath, made Polly look like a black widow, who wanted Owen dead for his money and on the strength of her testimony, Polly was found guilty of murder. This immediately made Cathy a few enemies - Sgt. June Ackland was disgusted at the way that Cathy had acted in court and from now on was going to keep a close eye on Ms. Bradford.

The day that DC Juliet Becker was stabbed, Cathy was asked to appear on GMTV's Lorraine Kelly Show to talk about Polly and her case. Of course, Cathy claimed that Polly was a crap copper and that Cathy 'believed in the British judicial system'. No one who knew Polly could bear to see Cathy smearing Polly's well respected reputation.

After her carelessness with a vital piece of evidence in a rape case for CSU, Cathy was removed from the Community Safety Unit and demoted sideways back to uniform duties. When Cathy came back from leave, she noticed that DC Brandon Kane and PC Honey Harman were getting close after a joint CID-Uniform operation and this angered Cathy. Cathy couldn't stand how someone like Honey could get so close to Brandon, when Cathy was here all along. Did the night that Cathy and Brandon spent together mean anything to him? (Brandon had sex with Cathy one night - when he was drunk). With Brandon's children staying at Honey's house, Brandon was starting a normal shift when Sgt. Smith stopped him in the corridor. There had been a call from CAD to an address where there was a house fire. The house was Honey's.

Luckily no one was hurt in the blaze, but Brandon blamed Honey. It turned out that incense sticks had caused the fire in the house and everyone blamed Honey. Cathy also stuck the knife in, making poor Honey paranoid about the fire. With Brandon at his own house, Cathy could relax.

With Cathy's lie about her being pregnant, Brandon felt sorry for Cathy and allowed her to stay at his house and look after the children. Meanwhile, Cathy's pretence with Max was getting on her nerves. She couldn't live with this lie any longer and needed to end the relationship. When trying to attract his attention away from something whilst on duty and in full uniform, she tried the whole 'let's take our relationship a step further' routine and started kissing Max. Of course, Max was enjoying this and liked it a lot - Cathy didn't. When Max wanted more, Cathy knew she couldn't. Max, thinking Cathy was playing hard to get, was a little forceful, and this angered Cathy - so she pushed him back, which caused him to hit his head. With Max stunned on the floor, Cathy regretted what she had done. She didn't want the relationship, but she didn't want this. She went closer to see if Max was alright, but Max sprung to life and grabbed Cathy closer to kiss her. This was the moment that she flipped, and suddenly looked at Max with a look in her eye, and as quick as lightning, grabbed her ASP. As she extended the ASP to full length, Max uttered his last words, "Cathy - what are you doing??" when PC Bradford brought the ASP down on Max's head. Hard.

Cathy had to pretend to be the grieving widow when she "found" out Max was dead. She pulled off a very convincing performance and was sent home. MIT couldn't find any link to the body they found and a murderer, so it looked like Cathy was in the clear. She started to head home to Brandon's.

Brandon had come home earlier to find his children in Cathy's bedroom. They had found a tape and they were watching "mummy". Sickened, he looked towards the TV screen and it was CCTV footage of his dead wife and PC Cathy Bradford moments before her death. Petrified, he grabbed the tape, his children and left the house, not before putting an empty video case where the children had found the tape.

Brandon confided in Honey after watching the tape when he realised what Cathy had done. Angry at first at how she was treated about the fire, Honey soon put that aside when she watched the tape. She remembered what MIT had said about Max's death - that he had been killed with a blunt instrument. Could this have been a police issued ASP? Whilst Brandon went to go and speak to Robbie Cryer in her new job, Inspector Gina Gold reprimanded the relief for loosing bits of their kit. "...and to top it all of, we've lost an ASP!" shouts Insp. Gold. Honey asked who had lost their ASP and Insp Gold looked down the sheet of paper and said, "PC Bradford".

Brandon went to go and see Robbie Cryer at Canley Leisure Pool, since he knew that Robbie and Cathy weren't particularly good friends. Robbie told him the disturbing truth - Cathy was doing this for him...she was obsessed with him! As Brandon left the pool, Robbie was stopped by someone outside the staff entrance. She was later beaten up and left by the roadside...

...any guesses who beat Robbie up?

Brandon, who found out that Cathy had reported her ASP missing, raced home to search Cathy's room. Cathy had kept a token of Tanya's death (the video tape) and he was working on the logic that she'd keep the bloodstained ASP in her room. He was right. He was nearly caught by Cathy himself when she came home early from beating Robbie up. Quick thinking Brandon managed to escape with the ASP without Cathy catching on.

With all the evidence he needed, Brandon told the DCI and Supt. Okaro about his suspicions about Cathy. They were shocked when they realised that the ASP contained Max's blood on it. With everyone at Sun Hill informed that their colleague, Cathy Bradford, was wanted by MIT in connection with two murders, they realised that all was not well with Cathy. With MIT and PCs Harman and Stamp outside Cathy's house, should she come back, it looked impossible for Cathy to not be caught. When PC Stamp nipped off for a quick pee, Cathy sneaked up to PC Harman and smacked her over the head with a pole and sneaked into the house. She couldn't find the video tape OR the ASP. She knew that she had been found out.

With nothing left to loose - Cathy formulated a plan. Back on went the uniform and kit (minus the ASP of course) and it was straight to Zoe and Jordan Kane's school. After lying to the headmistress, she took Zoe and Jordan to her car. After telling them that they were going 'to have the time of their lives' she drove off. When Sun Hill realised that Zoe and Jordan were missing, it was too late. Cathy was on her way...but to where?

With every available unit out conducting door to door enquiries around Sun Hill, Cathy called PC Honey Harman's mobile. Her message to Honey was "you're getting warmer". What could this mean? It wouldn't have been so hard to work out if it had been warmer back at Sun Hill. The heating had gone off suddenly. A technician was called in to fix the boiler.

When the boiler technician's boss called Sun Hill asking where the hell the technician was, Sgt. Ackland began to worry. Down she went into Sun Hill's boiler room, to find a stirring boiler technician.

"That copper you're looking for," he pointed to the door to the boiler room.

"She's in there!"

Cathy was pleased when they had finally found her hiding place. She had been extremely lucky - someone had forgotten to invalidate her swipe card which allowed her access to Sun Hill police station. Ooopsy! With Cathy giggling and saying that she would speak to DC Kane only, Brandon was called in. He managed to speak to Cathy and for him to take the children's places. At the last moment, Cathy changed her mind and allowed only one child free. Brandon screamed to be allowed in - Cathy allowed this, and made sure he could see the knife to Zoe's neck. Seeing Brandon, she allowed Zoe to be released. As Brandon kissed his daughter goodbye, he whispered to tell the officers outside that Cathy has a knife. Cathy, alarmed, demands to know what he said to her. "Zoe said that she loved me and I told her I loved her back". Cathy smiled.

With all of Sun Hill evacuated and operations being conducted from Barton Street - Brandon and Cathy talked. Well, it was mostly Cathy talking. There was the odd moment when Brandon managed to outsmart Cathy and tried to overpower her, but all he got in return was a stab wound to his shoulder.

Cathy threw a spanner in the works, literally when she shut off all the electricity to Sun Hill. DC Eva Sharpe and DS Sam Nixon, using torches, looked through Cathy's possessions from her home. They found clippings from newspapers - including one about a serial killer called "The Teacher".

Meanwhile, a stabbed DC Kane had to listen to Cathy recounting the harrowing experience of being abducted as a child by 'The Teacher'. At first Brandon didn't believe...but the he did. It wasn't worth it, because she was lying. As DC Sharpe and DS Nixon found out, it wasn't Cathy who was abducted, it was her friend. So, it wasn't the abduction that scarred Cathy for life - she had always been like this.

With TSG (Territorial Support Group) and the Dog Units on standby - and the covert microphone not working, Supt Okaro decided to end the siege. The microphone wasn't working since Cathy had moved into a further room at the back of the main boiler room. Orders were - GO, GO, GO!

Brandon decided to have one last crack of the whip and nearly managed to overpower Cathy. Actually, Brandon ended up with the knife, quite an achievement since Cathy had handcuffed him to a pipe - but Cathy wasn't giving up easily. She grabbed a discarded tank of petrol and started to shake it around. Out came the lighter...

Inspector Gold, along with the TSG had managed to enter the boiler room and when they found it empty, they found the hidden room at the back. Petrol was smelt and Insp Gold screamed for extinguishers to be on stand by...

Cathy - a woman who was over the edge, held the lighter in her hand, watching DC Kane. Brandon, petrified went to grab the lighter, but managed to knock it out of her hand. BANG goes the Boiler Room. Cathy jumped to Brandon and held on, a look of pure fear in her eyes.

This was it, she thought. The End.

Only, it wasn't. TSG stormed in, extinguished the fire and when Cathy opened her eyes, she was being forced onto the ground by TSG and being handcuffed by Sgt. Ackland. Oh, Cathy wasn't going silently, she was screaming. Pure blood curdling screams and wails escaped Cathy's mouth and she tried to escape the clutches of TSG.

As Supt. Okaro read out Cathy's rights, Cathy silently mouthed them.

"...may harm your defence if you don't mention it court. Anything you do say may be given in evidence...I'm a police officer!" she wailed as they led her away.

The last Sun Hill saw of Police Constable Cathy Bradford was when she was forced into the police van. Smiling, she was pushed into the van. It was only inside did her facade break and she sobbed. She wouldn't be tried for her crimes - sectioned under the Mental Health Act more like.

There came the end of PC (ex. Inspector) Catherine Bradford. She came to Sun Hill with ambitions of becoming an inspector again, "because [she] had initiative!" as she yelled at PC Dave Quinnan. But it wasn't to be.

No marriage to PC Nick Klein.

No pips on her shoulder.