A contract killer who stabbed the wrong man to death has been found guilty of murder and sentenced to life in prison.
Glen was a "professional killer" who had a conviction for murder
Paul Glen, 33, of Fleetwood, Lancs, was also found guilty of conspiracy to commit grievous bodily harm by a jury at Norwich Crown Court on Friday.
Glen stabbed Robert Bogle, 25, to death in Farcet, Cambs, in June last year.
The judge ordered that Glen, cleared of conspiracy to murder, must serve nine years concurrently for conspiracy to cause grievous bodily harm.
Three other men said to have been involved in the plot were cleared of murder and conspiracy to murder.
Jurors heard Robert Bogle was not the intended victim
Victor Dark, 48, of Waltham Cross, Hertfordshire, was cleared of both charges and of conspiracy to cause grievous bodily harm.
Robert Lotts, 45, of Farcet, and his brother-in-law Wayne Wright, 45, of Hackney, London, were cleared of murder and conspiracy to murder, but had admitted conspiracy to cause grievous bodily harm at an earlier hearing.
They are due to be sentenced at the end of August.
The court heard that wealthy builder Lotts wanted to kill Mr Smart, 30, because he believed he had been intimidating his son.
Rex Tedd QC, prosecuting, claimed that Lotts had contacted Glen via two third parties, Wright and Dark.
Mr Glen travelled from Liverpool to Mr Smart's home in Farcet armed with a knife.
But, by mistake, he stabbed and killed Mr Bogle, who shared a house with Mr Smart.
Jurors were told that Glen was a "professional killer" who had a conviction for murder.
Sentencing Glen, deputy high court judge Sir John Blofeld said: "As a result of your actions a young man who had a future before him lost his life in circumstances which were terrible."
He ordered that Glen remain in jail for the rest of his natural life.