File on a Painless Dentist
Written by
James Mitchell
Copyright 1970
Originally published in the Sunday Express, 10/11/1970 - Contained in the collection .
Callan must confirm if a dentist named Clarkson is actually a KGB agent named Orlov and, if so, to kill him. Clarkson, a well-liked and seemingly gentle dentist in Kent, is suspected of using his practice as a front for espionage.