Question: is the movie blind faith based on a true story

Answer: Yes, Blind Faith is a 1990 NBC miniseries based on the 1989 true crime book of the same name by Joe McGinniss. It follows the 1984 case in which American businessman Robert O. Marshall was charged with (and later convicted of) the contract killing of his wife, Maria. Adapted by John Gay and directed by Paul Wendkos, the miniseries was originally broadcast in two parts with a total runtime of 190 minutes.