If you were the chap at Scotland Yard trying to convince the Commissioner to enlarge the dog department; you could do worse than show him this rather lightweight, but enjoyable, drama about a police officer "Frank" (Tim Turner) who uses a police dog to try and track down the murderer of one of his colleagues. That's about the height of it - it's an uncomplicated manhunt, only the hunter has a much more sentive nose for the task. Joan Rice provides the glamour - though I wasn't quite sure what purpose her role served (as she is his sister!) and John le Mesurier and Christopher Lee make a few…