Stream Who Killed Simon Baird Online Free – Watch Full Movie from Home at 123Movies. . Edith and John Maitland will allow David Sterling to marry their daughter Helen as soon as he earns five thousand dollars, so David tries to sell one of his inventions to Simon Baird for that amount. Simon, unable to make up his mind, is found murdered the next day, and David is arrested with five thousand dollars of Simon's money in his possession.