But you overrate our powers.

We can only act on evidence that a crime has actually been committed or is actually being attempted.

Now we have no such evidence.

Look at your statement, and tell me what you can swear to." "I think I could swear that Mr.Graves had taken a poisonous dose of morphine." "And who gave him that poisonous dose ?" "I very strongly suspect--" "That's no good, sir," interrupted the officer.

"Suspicion isn't evidence.