temporary agency

Who is My Employer When A Temp Agency Has Placed Me In A Job Where I Had An Accident?

A temporary agency placed me in a job with one of their clients. Their client made me work long hours and did not pay me overtime and then to top it off, he said that I was "a lazy white person." Both the client and the temp agency are pointing the fingers at the other. Who do I turn to to deal with my overtime and discrimination claims?