Thin Ice is a 1919 American silent drama film directed by Thomas R. Mills and starring Corinne Griffith.

[2] As described in a film magazine,[3] Ned Winton (McLean) is employed in the office of Benjamin Graves (Lytton), a crooked dealer in mining company stocks, and speculates using the firm's funds.

Alice (Griffith), his sister, prevents his arrest by signing a note for the amount stolen and puts up as collateral the mining firm stock sold to her father by Graves.

She goes to see him only to find that he has concocted evidence which would convince her husband that she has been his mistress, and Graves insists that she gratify his desires.

She escapes and returns home, planning on robbing her husband's safe to pay the debt.