The vignette at the start of this show is based on the Arthur Conan Doyle story "The Adventure of the Six Napoleons".
221B Baker St is the Brownstone set redressed.
Abbey Grange and Boscombe Valley are both titles in the Holmes canon, short stories by Sir Arthur Conan Doyle. Eduardo Lucas is also present in original short stories. He was a society gentleman and amateur tenor living in London who appears in the The Adventure of the Second Stain.
Tamsen Greig and Johnny Lee Miller also starred in the Jane Austen mini-series "Emma" together.
Saffron Burrows (Ruby Carville) and Tara Summers (Nurse) both starred in Boston Legal season 4.