Direct CP violation in neutral kaon decays

The final result is presented of the NA48 Experiment performed at CERN SPS neutral kaon beams on the direct CP violation parameter $\Re(\epsilon '/\epsilon)$, as measured from the decay rates of neutral kaons into two pions. The data collected in years 1997-2001 yield the evidence for direct CP violation with $\Re(\epsilon '/\epsilon)=(14.7 \pm 2.2)10^{-4}$. Description of experimental method and systematics, comparison with world data and some discussion of implications for theory are given.