The Perfect Flaw is a 1934 British crime film directed by H. Manning Haynes and starring Naomi Waters, Ralph Truman and William Hartnell.^[1] The screenplay concerns a clerk who is planning to murder a stockbroker but is foiled in the attempt.

Cast

• Naomi Waters ... Phyllis Kearns
• D. A. Clarke-Smith ... Louis Mddox
• Ralph Truman ... Richard Drexel
• Wally Patch ... Bert
• Charles Carson ... Henry Kearns
• Romilly Lunge ... Jack Robbins
• William Hartnell ... Vickers
• Hal Walters ... Jennings