A Study in Scarlet is a 1933 American pre-Code horror mystery thriller film directed by Edwin L. Marin and starring Reginald Owen as Sherlock Holmes and Anna May Wong as Mrs. Pyke.

The title is taken from Arthur Conan Doyle's 1887 novel of the same name, the first in the Holmes series, but the screenplay by Robert Florey was original.

While they are talking one of the society's members, Captain Pyke, rushes in and Eileen sees him killed by a shot fired through the window.

Eileen tells John that her late father had told her that Merrydew would arrange for her to receive a large inheritance.

The Scarlet Ring holds another meeting, where some of its remaining members, especially Jabez Wilson, are fearful for their lives.

Merrydew tells them that, after waiting five years, their scheme is about to pay out one million pounds, which is £200,000 for each of the five remaining members.

Eileen and John depart happily, and Holmes is content he has rid London of another master criminal.