We were with him in the lodge of the concierges, and yet we heard nothing, not a sound.

The concierges have lied, of that there can be no doubt.
They must have been already waiting, not far from the pavilion, waiting for something! Certainly they are not to be accused of being the authors of the crime, but their complicity is not improbable.

That was why Monsieur de Marquet had them arrested at once." "If they had been accomplices," said Rouletabille, "they would not have been there at all.

When people throw themselves into the arms of justice with the proofs of complicity on them, you can be sure they are not accomplices.

I don't believe there are any accomplices in this affair." "Then, why were they abroad at midnight?
Why don't they say ?" "They have certainly some reason for their silence.