Episode 3 The Interrogation (3)

The policeman arrives.

Arrest the scientist immediately!

Why, what did I do?!

You poisoned Sir John Adams!!

Lord Samuel shouts, But how did you figure out it was him??!

You found yourself out!

First you got nervous when I asked for the Interrogation!

Second the Herpetologist said you offered a drink to Sir John Adams!

Third you told me that you knew about poison, so it was the perfect chance to poison Sir John Adams!

But why?