ITV4 Sherlock Holmes Catch up on the ITV Hub Sherlock Holmes is one of the world's greatest and most popular fictional detectives. His acute perception and powers of observation are called upon in solving a compendium of crime. As ever, Dr Watson is on hand as his indispensable assistant. 2 episodes available to watch Share this programme: Copied to clipboard Share on Facebook Share on Twitter Copy link to share Series 4 Latest 4. The Red Circle Sun Sunday 23 Jun 12.35pm Holmes and Watson investigate a violent criminal organisation known as The Red Circle. 3. The Golden Pince-Nez Sun Sunday 23 Jun 11.25am Holmes investigates the case of a dead man found clutching a pair of golden pince-nez.