The Moonstone

Limping Lucy has a letter from Rosanna Spearman to be delivered personally to Franklin Blake. But unfortunately Blake has left the country. Godfrey Ablewhite is assaulted and searched by the three Indians in London. Afterwards he proposes marriage to Rachel once more.

Rosanna's letter offers explanation but also more mystery concerning the theft of the Moonstone. Franklin Blake sets out to prove his innocence and win back the love of Rachel Verinder. Doctor Candy's assistant Ezra Jennings offers his help.

Ezra Jennings conducts an unusual experiment to prove Franklin Blake's innocence. In order to do so, the exact conditions of the night the Moonstone was stolen have to be duplicated.