Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.
Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman’s son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.
The tranquility of a small town is marred only by sheriff Tod Shaw’s unsuccessful courtship of widow Ellen Benson, a pacifist who can’t abide guns and those who use them. But violence descends on Ellen’s household willy-nilly when the U.S. President passes through town… and slightly psycho hired assassin John Baron finds the Benson home ideal for an ambush.
Cashier and part-time starving artist Christopher Cross is absolutely smitten with the beautiful Kitty March. Kitty plays along, but she’s really only interested in Johnny, a two-bit crook. When Kitty and Johnny find out that art dealers are interested in Chris’s work, they con him into letting Kitty take credit for the paintings. Cross allows it because he is in love with Kitty, but his love will only let her get away with so much.
High-school principal Dr. Alfred Carroll relates to an audience of parents that marijuana can have devastating effects on teens. In his story, a drug supplier entices several restless teens, including sister and brother Mary and Jimmy Lane and Mary’s boyfriend, Bill, into frequenting a “reefer” house. Gradually, Bill and Jimmy are drawn into smoking dope, which affects their family lives and leads to a terrible crime.