I only ever knew one genuine professional hit man.
24 year old Croatian monster in Cannes, who was doing the work so he could buy his mum a nice house back home
He came to me because one of his targets was renting a villa, in a gated domain, I was handling.
He asked me loads of questions about the bloke and we had a good night together drinking in Nice.
To cut a very long story short he agreed to hold off doing anything until I'd collected four months back rent which was about 10 grand.
The renter was a 'French' playboy, Kevin Charpentier, who'd arrived in a Ferrari, put 6 month deposit down in cash and had a AAA rating with a Swiss bank.
I checked with the bank who confirmed it, he and his solicitor signed the contract and I gave him the keys ...
... he immediately changed the locks, gate code, etc and never paid a penny in rent.
When I eventually got the money he just vanished. When I got into the garage he'd left the Ferrari so I got a polis mate to come up ....
.... stolen on false plates and bags of white powder hidden in the air filters.
Mad days ...