The Frisky Mrs. Johnson is a 1920 silent film comedy starring Billie Burke.

[1][2] As summarized in a film publication,[3] Mrs. Belle Johnson (Burke) is a widow and has a married sister Grace Morley (Warrington) who is unhappy and is having an affair with Sir Lionel Heathcote (Gordon).

At the same time Grace is planning on running off with Heathcote, and a note sent to her is found by her husband Jim (Crane).

Jim follows his wife Grace to Heathcote's apartment, but Belle gets there ahead of them and pretends that the note was meant for her.

Eventually, Grace decides that she cannot let her sister sacrifice her happiness and tells her husband the truth.