One wonders who the assassins for hire are. Some powerful people, somewhere, are able to dispatch modern day assassins. Those assassins must have some sort of way of... advertising themselves. It's an interesting problem, since clearly they are doing this for some sort of compensation, i.e. it's a business.

Sometimes, reality is stranger than fiction. It'd be interesting to know what the inner workings look like.

Of course, one can't rule out the mundane explanation, that he went missing with his car keys in the ignition because he decided to get out and vanish for no apparent reason, without informing his girlfriend, and without using any of his credit cards that would immediately lead authorities to his location.