"In that lift are Dieusy and Lupin.

You know Dieusy ?" "Yes, yes," said the policeman.
"There are only Dieusy and Lupin in the lift.

They are struggling together.

You can hear them," shouted Lupin in the policeman's ear.
"Lupin is disguised.

You understand--Dieusy and a disguised man are in the lift.