Jerome Breen (Lionel Atwill) is accused of murder after being identified by an eye witness. However, the witness says Breen spoke. At the trial, Breen's attorney proves he is a deaf mute and the witness' testimony falls apart. So now the police must figure out if Breen really is guilty or being framed.This is a fun little quickie from poverty row studio Monogram. It's best if you don't overthink it or look at it exclusively through a modern lens. It was made on the cheap in the early 1930s. Yes, the sign language Atwill uses is just meaningless hand gestures. This was back in the days when the public was probably largely unaware of sign language and it was highly unlikely a studio, especially one like Monogram, would expect its actors to learn some just for a part. Just enjoy it for what it is: a fun but cheap little mystery thriller with the always-great Lionel Atwill starring.

Talky suspense quickie with an intrepid reporter (Newton) and his would-be girlfriend (Terry) investigating the murders of stockbrokers, both of whom become obsessed by the deaf mute (Atwill) accused of the murders. Slow to warm, this pot-boiler gradually heats up thanks mainly to Atwill, painting the picture of a gracious man of wealth and culture who may or may not be a callous murderer. Atwill, still relatively early in his career before the scandal that would ultimately cast him asunder, is highly effective achieving more through his expressions than which most actors are capable of with unimpeded speech. The supporting cast includes Paul Fix in a bit part as a stockbroker, Paul Hurst as a detective who reluctantly assumes the role of police inspector with two weeks to solve the case.The climax is unexpected and the clues are quite innovative, so while the pace might be a bit off, there's just enough to hold the interest for the 62 minutes give or take a couple of rather overlong melodramatic moments between Newton and Terry establishing their character's mutual affections, and that of Hurst, as he bumbles into the spotlight.

Minor fare (from Poverty Row studio Monogram no less) which is only borderline horror at best but does include a double dose of Lionel Atwill as a killer and his deaf-mute twin brother. Since apparently only his associate is aware of this set-up, the murderer is able to supply an alibi by making sure to be seen and speak after the fact and then act deaf-and-dumb at the subsequent trial (which causes him to be dubbed "The Sphinx")! Apart from the Police, hot on his trail is a reporter (these were a fixture of horror/mystery efforts made during the 1930s and 1940s set in contemporary times) – whose girlfriend, a colleague, happens to be an ardent admirer of philanthropist(!) Atwill. Needless to say, this causes a rift between the two and also paves the way to her being held captive in the villain's house once his ruse is discovered; the suspense inherent in this situation is, however, undermined by the amusement of having the deaf Atwill spring instantaneously from behind the secret passage every time the triggering piano key is pressed (unintentionally). Despite the evident low-budget, a bland hero and the fact that Atwill adopts dubious sign language throughout, the film – a lean 62 minutes – proves mildly enjoyable as these things go.

This is an ingenious and interesting B thriller. The 'sphinx' is a deaf mute, who is, to say the least, extraordinarily enigmatic. (No Egyptian connection! Not a pyramid in sight!) Lionel Atwill plays 'the sphinx' and makes the part very compelling. The mystery is: how can this man who, the doctors say, has been deaf and mute from birth, be a psychopathic murderer who always speaks to the witnesses of his crimes? This takes a lot of figuring out. He is tried and acquitted of murder, natch. But is there more to this? The ingenue role is played by Sheila Terry, who is extremely lively and is very like Fay Wray but without the steamy sensuous air about her. Her eyes sparkle, one wants to go on watching her, and it is a pity she quit films early and died aged only 46. (Here she is 23.) A young fellow of considerable charm is always trying to get her to marry him, played very well by Theodore Newton. Luis Alberni plays an amusing character part. This is a cheapie but a goodie.