In the initial start of the novel, Dickens is criticizing the horrific
conditions that the orphans in the workhouse must undergo, simply due to
the fact that there is no help or representation for them to have a
better lifestyle. This points out the immoral and inhumane actions of
those in power at the time.
Armand was in love with Desiree at first sight "as if struck by a pistol shot".
Doesn't he think that he hears the heart beating under the floor board?
Because he hears this faint beating leaving him to be paranoid that the cops know that he hid that guy under there.