Death at the Dolphin is a detective novel by Ngaio Marsh; it is the twenty-fourth novel to feature Roderick Alleyn, and was first published in 1967, the plot centers on a glove once owned by Hamnet Shakespeare, Hamnet  was the only son of William Shakespeare and Anne Hathaway, and the fraternal twin of who?
Death at the Dolphin:  The plot centers on a glove once owned by Hamnet Shakespeare, on display at a newly renovated theater called the Dolphin; the novel was published as "Killer Dolphin" in the United States.
i don't know