Without knowing it, he was the private, personal counsel to a professional assassin.

The life of the professional assassin is often short.

You are an old man; he is a professional assassin.

If a professional assassin hits town, it won't take him long to find me here.

The military intelligence agency wasn't the only network that employed professional assassins.

It was argued that a professional assassin would not use such a poor quality weapon.

Just lately someone had been sending professional assassins after him.

She had no objection when the legal representative for Colorado called her a professional assassin.

The man is a professional assassin of the first rank.

Surely professional assassins have networks more specific to their trade.