the two first series be great and the third one be not too bad ( fortunately and melissa george be here ) and but then it get really bad . when plot get completely messy and zombie appear and boring character be introduce and this show become so rubbish . the only reason i be keep on watching be to finally understand the mystery around rambaldi . but in the end and we will never know because it not explain . not to mention that character be totally lose in the end ( irina wanting to destroy washington and london to have power . be you kid me . ) . it really disappointing and lot of fan be angry about that . watch alias be a waste of time .