The man calls Arty and they meet in a park
Arty: "What can I do for you?"
Man: "I want my wife killed"
Arty: "Alright. How much?"

The man looks in his pocket, and brings out a Pound.

Arty: "That all?"
Man: "Yeah"
Arty: "Alright I suppose".

So the man tells Arty where his wife shops on Saturdays, and on Saturday, Arty follows the man's wife to tescos, and when the coast is clear, he strangles her dead. As he does this, the manager comes along, and Arty is forced to kill him too.

Moments later, Arty is caught,

And in the Newspaper the next day says:

"Arty chokes two for a pound".