The Whole Truth.

A prosecutor instructs the audience of a courtroom to observe the tearful and slightly hysterical wife (Helen Gilmore) who is sitting in the witness box, and claims she is this way due to her husband, who shows up very infrequently. For the defence (James Finlayson), he never did anything to be proud of - and was proud of it. He sits there smirking and sipping a glass of water before being momentarily distracted. He goes to take another sip of his drink but instead picks up a different glass containing something very different.