Desc: Oh Mary Be Careful: Directed by Arthur Ashley. With Madge Kennedy, George J. Forth, George Stevens, Bernard Thornton. Mary Meacham, the most popular girl in college, goes to live with her maiden aunt, Miss Myra. Auntie is a man-hater who has various theories for testing the desirable qualities of the male sex. Mary sees a dreary man-less time before her and sends an S. O. S. to various sisters and their brothers to visit her while Auntie is away. Then a tree surgeon comes on business and proves to be a most attractive young man. Mary tries Auntie's theories plus some of her own. Complications ensue. When Auntie returns, Mary finds the surgeon is the man she wants. Moving Picture World - 1921.