When a successful Realtor begins having nightmares of real-life crimes that are orchestrated by the mob he must find how to use this “gift” to save the victims and himself.

Why is he a realtor? As cdesikan said, we need more specifics - are these premonitions which can save the victims? Or transferred memories which can help solve a crime and get justice?

Why does he need to save himself? Where's the danger?

Just my thoughts: Though there is a hook, i am not clear of its power. For e.g. is the realtor sees the crime before it happens or afterwards. Why only 'mob'? It would be good to have all four components:
1. protagonist 2. hook 3. antagonist 4. solution