A POLICEMAN S career was in ruins tonight after he was convicted of waging a terrifying harassment campaign against his WPC lover. PC James Curtis, 37, was told he could face jail after a jury decided he deliberately tormented Donna Brand with his twisted

A POLICEMAN'S career was in ruins tonight after he was convicted of waging a terrifying harassment campaign against his WPC lover.

PC James Curtis, 37, was told he could face jail after a jury decided he deliberately tormented Donna Brand with his twisted "mind games".

A court heard how "Jeckyll-and-Hyde character" Curtis subjected her to his "controlling behaviour" during their stormy 18-month relationship.

He attacked his fellow officer, repeatedly threatened to kill himself and boasted that he and his ex-wife had secretly been enjoying sex acts.

He was later alleged to have carried out a bizarre revenge attack in which he wrecked WPC Brand's Bunny Wand vibrator after she left him.

The couple, both officers in the Norfolk force, first met in 2004, while both were working at the Terrington Beat Base in Terrington St John.

Curtis had recently split from his wife, and by spring 2005 the pair were living together - first at his parents' home and later in Holbeach, Lincs.

Giving evidence, WPC Brand said she was "head-over-heels in love" but admitted his mood-swings prompted him to play "silly mind-games".

She said that during one row Curtis pretended to phone his ex-wife Marie, saying: "I've told her everything. I love you. I'll be home in 10 minutes."

WPC Brand said: "I started crying. Because he would play games with my head all the time, I didn't know whether he had phoned her or not."

She said Curtis then claimed he had been having secret sex-sessions with his ex-wife, adding: "He said now it was in the open we could move on."

The court was told Curtis was on medication for depression after he was involved in a car-crash and could be "volatile and somewhat unstable".

Michael Cranmer-Brown, prosecuting, told the jury: "When his medication was combined with drinking he was something of a Jeckyll and Hyde."

WPC Brand told how in one incident Curtis suddenly pulled on the handbrake of her Volkswagen Passat as she was driving at around 60mph.

She said that when they later argued again at home he poured water over her after marching her into the kitchen as if she was a police suspect.

She said: "He walked me by the arm, a little bit like you lead people away at work. He poured a glass of water and then poured it over my head."

Curtis eventually moved out of the pair's home and later sent WPC Brand a text-message to say he had removed his belongings from the property.

But WPC Brand said that when she returned she found the house in disarray, adding: "All the cupboards were open, and things were spilling out.

"The heating had been turned up to 30 degrees. There were CDs and things on the floor. The freezer door was open, and the contents had defrosted."

She said a male colleague who had accompanied her to the property spotted her "bent and snapped" vibrator when they checked on the bedroom.

She added: "I wasn't sure about whether I was going to make a formal complaint. I was embarrassed. I had only recently bought it. I hadn't... you know."

Curtis, of Marsh Road, Terrington St Clement, Norfolk, who claimed the couple decided to split because they argued so much, denied harassing her.

But at the end of an eight-day trial and following a day's deliberation the jury convicted him of putting a person in fear of violence by harassment.

He was also convicted of endangering road users as a result of the handbrake incident - despite claiming WPC Brand had exaggerated the drama.

The judge had earlier ordered he be cleared of damaging property - including the Bunny Wand, which at one stage was shown to the jury.

Judge Michael Heath made the ruling after it emerged Curtis had gone to the house with friends and it could not be proved he was responsible.

Adjourning sentence for reports, he allowed Curtis bail but warned him: "The fact I grant you bail won't mean I won't sentence you to prison."

Stephen Spence, defending, told the court: "This is a serving police officer. His career and future employment are now in ruins.