In the quiet Wiltshire cathedral city of Salisbury, the contrast between everyday life and lethal international espionage was acute. That’s the most prominent of many angles taken by The Salisbury Poisonings: A Spy Next Door, a not quite comprehensive but still nicely busy feature length documentary that offers a compendium of ways in which the Salisbury attack was fascinating and deeply strange. It must have been an unforgettable episode in their careers, but none of their recollections quite bring it to life. Back in Salisbury weeks after novichok was unleashed, the fallout continued to be a mixture of eccentric and tragic. There was nothing funny about the Salisbury poisonings, but their elusive quirkiness makes them unique.