William March was an American author known for his contributions to literature, particularly in the horror and psychological thriller genres. He was born on March 18, 1923, and gained recognition for his novel, The Bad Seed, which explores themes of nature versus nurture through the story of a young girl with sociopathic tendencies. March's writing often delved into the darker aspects of human nature, making him a significant figure in 20th-century American fiction. His works have been adapted into films and continue to influence writers and filmmakers in the horror genre. He passed away on March 8, 2014.