Avsnitt 3

Everyone's in a tizzy over the arsenic poisoner who's still at large; police think the murder might be a woman. In the Thomas household, doting old George acts surprised to find his weed poison (with arsenic) under the kitchen sink. His wife, a delicate woman with bad nerves, defends their cook, a woman they hired who came with no references. George becomes suspicious of their employee and has the hot cocoa she left for him analyzed . When the results come back positive, he races home to save his wife before it's too late.