Lonely Heart Bandits

Lonely Heart Bandits is a 1950 American drama film directed by George Blair and written by Gene Lewis. The film stars Dorothy Patrick, John Eldredge, Barbra Fuller, Robert Rockwell, Ann Doran and Richard Travis. The film was released on August 29, 1950, by Republic Pictures.
Plot.
Two con artists join forces and pose as brother and sister. He then meets rich widows through the "personals" sections of newspapers, marries them, and both kill the widows for their money.