A recording device made by Alexander Graham Bell assists in the investigation of a murder at a dinner honoring Helen Keller.
Episode rating
Cast of episode
67
18
6
4
- Detective William Murdoch
- Constable George Crabtree
- Dr. Julia Ogden
- Inspector Thomas Brackenreid
- Constable Henry Higgins
- Alexander Graham Bell
- Ralph Fellows
- Helen Keller
- Anne Sullivan Macy
- Ruth Higgins-Newsome
- Herbert Wilson
- Horace Carmondy
- Mabel Bell
- Pawn Broker
- David Thornton
- Ernestine Wallace