What is the relationship between faith and works?

James 2:19-20, Thou believest that there is one God; thou doest well: the devils also believe, and tremble . . . faith without works is dead?

Faith leads to works. 

Real faith is this: God speaks His word into your heart; you believe Him; you obey Him by the power of His grace--in other words, God does His works through you as you yield the members of your body to Him. 

If the works are missing, faith is dead.  Faith has works.