Is there a crime for receiving money under false pretenses.

Question Details:

A colleague at work solicited a large sum of money from me promising large returns investing and now I fear they don't intend to give it back. A paper agreement was signed and a check was used. I received 2 paper statements showing big gains, but became suspicious. I asked for my money over 2 months ago and after a bunch of excuses and heated discussions I am told no profits will be given to me and I fear my original sum may even be in jeopardy. What can I do? This person it appears is not ethical and I want to know what I should do? Important Notice