A Deadly Combination

Completely AU. What if Rick and Kate were about the similar age and had met at college? What if they held the same chemistry they constantly fought? What if Bracken didn't want to wait 10yrs before trying to eliminate a loose end. What happens when Rick's and Kate's paths collide 10yrs later. [Agents of S.H.I.E.L.D., Lost and Fringe fans will notice crossovers and similllarities]