The Ladislaw case

"When Francis Courdroy is found dead of arsenic poisoning, his political rival Will Ladislaw is immediately the prime suspect. Courdroy had tried to blackmail him, and incriminating papers were found at the scene of the crime. Even if Will is innocent, he seems to be the key to the mystery. Will himself is convinced that someone is trying to harm him. The problem is that the only person he can thi...