The vibrant colors and hard edged shapes of the Pop Art movement originated in the late 1960s. Advertising agencies looking to appeal to the younger generation soon adopted the look. By the early 1970’s mass market thriller paperback books began to update their covers with bold graphic patterns, mod typography, and bright colors. The tragic stranger-than-fiction death of Georgi Markov has all the trademarks of suspense genre fiction; exotic settings, international intrigue, and a cold war backdrop. Who killed Georgi Markov?