NGC 3227 HAS IT ALL: RAPID X-RAY VARIABILITY A NEGATIVE LAG VARIABLE FE K EMISSION AND VARIABLE ABSORPTION. HOWEVER NO OBSERVING CAMPAIGN TO DATE HAS BEEN CONSTRUCTED TO OPTIMALLY USE THE TIMING AND SPECTROSCOPIC SIGNATURES OF THE REPROCESSOR TOGETHER TO MAP THE X-RAY GAS. WE PROPOSE TO COMBINE 320 KS ON XMM AND 160 KS ON NUSTAR TO ISOLATE REVERBERATION SIGNATURES FROM THE CIRCUMNUCLEAR GAS. OUR PROPOSED METHODOLOGY WILL ALLOW US TO MEASURE DIRECTLY IN THE LIGHT CURVE THE ACTUAL REVERBERATION DELAY THE TIMESCALE OF THE DELAY AND THE SHAPE OF THE "TRANSFER FUNCTION" WHICH GIVE AN UNAMBIGUOUS MODEL INDEPENDENT CONSTRAINTS ON THE REVERBERATING GAS. THIS GAS IS KEY TO UNDERSTANDING THE ACCRETION PROCESS AND THE CO-EVOLUTION OF GALAXIES AND THEIR NUCLEAR BLACK HOLES.