I had one not so long back
I was called to a unit, on an industrial estate where i had previously carried out work ( so he must have got my number from someone on there )
All the circuits needed putting back right as it looked as if someone had done a diy installation, and then removed the kit leaving it a right mess.
After the work was complete i turned up at his unit and he wasnt there, and after talking to the tenants of the other units it looked like he used me to sort the electrics so he could hand the unit back to the landlord in good condition.
After more conversations i found out he was a drug dealer, and the kit that got removed was his drug growing kit.... the unit had been raided by police the previous week.
Then i had comments like, hes a nasty piece of work, and his mates are like the mafia.....this fuelled me even more
No one wanted to tell me exactly where he lived although i got a rough idea from the other tenants
So after circling the area for a few nights i saw his car drive past me, so i turned around and followed him right to his house.
I got out of my car and walked towards him, he could tell i was angry ( maybe from the wheelbrace i was swinging )........first thing he did was pick up his young child from the back of the car, what a coward.
He promptly paid me, and i walked away smiling, thinking that maybe he wasnt the nasty piece of work that people had painted the picture to me.........if he was im sure he would have wiped the floor with me that night.....or maybe he wouldnt have