else in Muller's mentality, and now and then it brings him into
conflict with the department, ... or with his own better nature.
Sometimes his unerring instinct discovers secrets in high places,
secrets which the Police Department is bidden to hush up and leave
untouched. Muller is then taken off the case, and left idle for
a while if he persists in his opinion as to the true facts. And
at other times, Muller's own warm heart gets him into trouble. He
will track down his victim, driven by the power in his soul which
is stronger than all volition; but when he has this victim in the
net, he will sometimes discover him to be a much finer, better man
than the other individual, whose wrong at this particular criminal's
hand set in motion the machinery of justice. Several times that
has happened to Muller, and each time his heart got the better of
his professional instincts, of his practical common-sense, too,
perhaps, ... at least as far as his own advancement was concerned,
and he warned the victim, defeating his own work. This peculiarity
of Muller's character caused his undoing at last, his official
undoing that is, and compelled his retirement from the force. But
his advice is often sought unofficially by the Department, and to
those who know, Muller's hand can be seen in the unravelling of
many a famous case.

The following stories are but a few of the many interesting cases
that have come within the experience of this great detective.
But they give a fair portrayal of Muller's peculiar method of
working, his looking on himself as merely an humble member of the
Department, and the comedy of his acting under "official orders"
when the Department is in reality following out his directions.