Oops! You need to enable JavaScript in your browser to start watching. ITV3 Heartbeat My One And Only Series 18 - Episode 21 - Nostalgic police drama series. The murder of an insurance salesman produces some remarkable suspects and Miller is surprised by a face from the past. Tue Tuesday 6 Aug 12.40pm 60 mins 19 days left Share this episode: Copied to clipboard Share on Facebook Share on Twitter Copy link to share