William Moulton Marston was an American psychologist, inventor, lawyer, and author of self-help books and comics. He was a multi-faceted genius who made notable contributions in diverse fields. Although Marston was educated in law and psychology, he was more interested in learning about the complexities of human nature. Marston was the inventor of the early prototype of polygraph, or the lie-detector. The discovery that a person’s blood pressure shoots up when he lies led Marston to invent a machine that correlated blood pressure with the facts told, to ascertain whether they were true or false. This was the earliest form of the polygraph. Another area in which Marston excelled was writing. He created the popular comic character ‘Wonder Woman.’ Marston used the pseudonym “Charles Moulton” for writing the comic series. He was a supporter of feminist ideas and believed that women were as capable as men. This inspired him to create a fictional character who was a powerful and liberated woman but possessed all feminine characteristics. The two women in Marston’s life, his wife and his polyamorous partner, helped him in creating ‘Wonder Woman.’ Even years after Marston’s death, his books and characters continue to inspire people.