STUDY IN SCARLET, A with app & e-zone - Helbling Red Series Level 3

In Sherlock Holmes and Watson’s first mystery, a rich American is found dead in an empty house in London. There is a ring beside the body, and a German word, written in blood, on the wall.
Who is the man? And what was he doing in an empty house?
Sherlock Holmes uses observation and deduction to solve a case that covers thirty years and two continents.

Recording in British English.