1.1 File on a Deadly Deadshot by James Mitchell, adapted by Peter Mitchell With Lonely posing as his gentleman’s gentleman, the section’s top operative David Callan is sent to a country estate in Northumberland to infiltrate a rich men’s shooting party. One of his companions is an assassin but which one? High living and high stakes on the grouse moors as Callan attempts to work out which of the dead-shots is a man-hunter. This episode is taken from Callan Volume 01.