Can I take a moment to extol the brilliant work of David Murray , who plays the cop/psychopath Alan Lane? He is an unbelievably frightening man who exudes cold reptilian menace on moment and reasonable aggreivedness the next. He is fast as a snake, and unremittingly violent. He scared the bejesus out of me. The rest of the cast is up to there usual high standards, and the story structure is excellent, it's also good to see "Jack" slipping into the cast , and making good use of his boxing skills...Clarissa and Leo are as usual doing a fine job, but it's the terrifying crazy of David Murray, that mesmerizes from start to finish!