The challenge: http://upperrubberboot.tumblr.com/post/123904555213

The photo:



From a review by Frances Gray (1990), quoted in Bert Coules's 221 BBC:

Clive Merrison and Michael Williams are on the way to creating one of the most touching duos in this new tradition [of non-clueless Watsons, which Gray goes so far as to call "one goodish thing that has happened since the advent of Thatcher"]. Williams' Watson makes it clear from the outset that Homes' detective talent is not so much a reason for hero-worship as the thing that makes a difficult relationship tolerable. Merrison vocally exploits the paradox of Holmes: he is at his coldest when engaged in small talk, but when the brian is engaged he takes on a sensual purr, can show warmth and even tease Watson with a slight sexual edge.