Man Without a Conscience, The by Nicholas Carter

Nick Carter is a fictional detective who first appeared in 1886 in dime store novels. Over the years, different authors, all taking the nom de plume Nicholas Carter, have penned stories featuring "America's greatest detective". In this story, Nick has been contacted by his old friend, Chief Weston, of the Boston Police Department. When he arrives, he is shown a photograph, depicting a crime in progress and is informed there has been a spate of holdups on local highways. Something has to be done but Nick doesn't usually resort to consulting a fortune teller!