THE death of a cherished pet propels a retired hitman to the brink of murderous insanity in Chad Stahelski's blood-soaked action thriller.Laced with macabre humour and punctuated by balletic fight sequences, John Wick embraces comedy and tragedy as its eponymous hero exacts eye-watering revenge for the slaying of a beloved beagle.Keanu Reeves delivers one of his most compelling performances ...