Lord Peter Wimsey is an English aristocrat and amateur sleuth who solves mysteries for his own amusement with the assistance of his valet Mervyn Bunter and police detective Charles Parker. From the moment he meets charming and mysterious author, Harriet Vane, Wimsey grows fond of her and she joins to help on some of his cases. "Strong Poison" – Harriet Vane is on trial for the murder of her former lover, Phillip Boyes, writer with strong views on atheism, anarchy, and free love. Harriet is accused that she has poisoned him with toxins she had bought under false names. Wimsey visits Harriet in prison, declares his conviction of her innocence and promises to catch the real murderer. Wimsey also announces that he wishes to marry her, a suggestion that Harriet politely but firmly declines. "Have His Carcase" – During a hiking holiday Harriet Vane discovers the body of a man lying on an isolated rock on the shore, his throat has been cut. Alerted to the discovery by a friend, Wimsey arrives, and he and Harriet start their investigations of this young man who turns out had believed himself to be a descendant of Tsar Nicholas I of Russia. "Gaudy Night" – The dons of Harriet Vane's alma mater, the all-female Shrewsbury College, Oxford, have invited her back to attend the annual Gaudy celebrations. However, the mood turns sour when someone begins a series of malicious acts including poison-pen messages, obscene graffiti and wanton vandalism. Harriet asks her old friend Wimsey to investigate, after which they finally become more than friends. "Busman's Honeymoon" – Lord Peter Wimsey and Harriet Vane marry and go to spend their honeymoon at Talboys, an old farmhouse which he has bought her as a present. The honeymoon is intended as a break from their usual routine of solving crimes and writing about them, but it turns into a murder investigation when the seller of the house is found dead at the bottom of the cellar steps with severe head injuries.