When he doesn't have a case on, Benedict Cumberbatch's Sherlock indulges in a bit of indoor pistol practice. When Jonny Lee Miller's Holmes - and his female sidekick, Lucy Liu's Dr Joan Watson - have nothing pressing, apparently they just sit around staring at the ceiling.

To be fair, we are deducing rather a lot from a single photograph - the chances are this latest shot from Elementary, US network CBS's own modern-day take on Sherlock Holmes, is a therapy session in which recovering addict Holmes is being forced to discuss his problems with "sober companion" Watson. British viewers can find out for sure this autumn, when Elementary airs here on Sky Living.