In the final episode of Dragnet's seventh TV season, Friday (Jack Webb) and Smith (Ben Alexander) investigate the deaths of an elderly husband and wife. The theory that the couple died in a murder-suicide pact would seem to be confirmed by the suicide note left behind by the husband. But the two detectives suspect that there's another solution to the case when the dead woman's sister comes up with an astonishingly convenient piece of evidence. ~ Hal Erickson, Rovi