North Vander of Ravencourt Castle had died recently - very recently. His heiress was a young American named May Vandernot. And, according to the family solicitor, someone was trying to kill her.
Before Parker could get the specifics from the man, the phone had gone dead. And so he had taken the last train up from London. What else could a chief inspector do?
Thanks to the storm, he had barely enough time to send in a call to the local constable requesting information and to hire the last possible boat out. Alone, he would have to sniff out the would-be murderer and incapacitate him until help could arrive.
Chekhov's News: A newspaper article detailing Dirk "The Smirk" Chamberlain's recent parole denial.
Closed Circle: A storm prevents anyone from leaving, and the island ferry is out of service.
Curse: The Ga-gorib, caused by five men stealing the Bloodstone from an African tribe. One died suddenly, one was ripped apart by lions, one was burnt alive, one was completely drained of blood and one was disemboweled.
Da Chief: Chief Inspector Parker, though we don't see anyone else from Scotland Yard so it's unknown if he actually fits this trope.
Fu Ling promised his agent he would have the Bloodstone for his next performance and North refused, resulting in a heated argument;
Barbara Eggerton-Vandernot complains about being broke and getting nothing in North's will (although it turns out she has a balance of one million pounds in the bank, and received a respectable sum from North);
Phillipa was scorned by North.
It turns out everyone is a Red Herring: Major Gunn wouldn't murder his friend to pay back taxes and is genuinely afraid of the Ga-gorib, Dashalot would more likely try to marry May to solve his money problems, Fu Ling respected the wishes of his friend, Barbara is just putting on airs, and Phillipa had long since moved on. With the gardener, no less.
Unexpected Inheritance: May Vandernot, to whom North left the bulk of the estate. She mentions she'd lived with her mother's family in New York after her parents died in a car accident, and hadn't even spoken to the rest of the Vandernots.
Worthless Yellow Rocks: Invoked by North, who went through pains to have the Bloodstone registered in his name and made public that he was its legal owner. This made it worthless on the black market and pointless to steal - no one would be willing to buy such a famous and easily retrievable item.
You Look Familiar: Countess Rodriguez to Phillipa. She turns out to be Julliette's sister Isabel, and they're the daughters of famous French jewel thief Dirk Chamberlain.