Allan Pinkerton was a Scottish-American detective who founded the ‘Pinkerton National Detective Agency’. During the Civil war, when the secret service was devoid of technology, Allan and his troops managed to do their best to gather military intelligence. He was one of the first few people who showed the world how information can be extracted from enemy territory by working as an ‘Undercover agent’. Allan is remembered by many as the genius who foiled the assassination attempt on the legendary American icon Abraham Lincoln during the latter’s visit to Maryland. This incident grabbed the attention of even many modern day filmmakers who recreated it on celluloid. Pinkerton’s detective agency which he co-founded more than 2 centuries ago continues to operate till date as ‘Pinkerton Consulting and Investigations’. Pinkerton was a great supporter of labourers, and was against the thought of suppressing the labour class by aristocrats or influential people of the society. Allan was also known to be very honest with the clients who required his services. He never even hiked his fee without a consultation with the client.