Only fit for the asylum.

And that was the worst that would've happened to him if--" The Chief Inspector, his hand on the door handle, whispered into Mr Verloc's face.
"He may've been half-witted, but you must have been crazy.

What drove you off your head like this ?" Mr Verloc, thinking of Mr Vladimir, did not hesitate in the choice of words.
"A Hyperborean swine," he hissed forcibly.

"A what you might call a--a gentleman." The Chief Inspector, steady-eyed, nodded briefly his comprehension, and opened the door.

Mrs Verloc, behind the counter, might have heard but did not see his departure, pursued by the aggressive clatter of the bell.
She sat at her post of duty behind the counter.