"Did the man use them?" asked Amster. The detective nodded. "How
can they help us?"

"Somewhere on this stretch of the street railroad you will probably
find the stand of the cab we are looking for. The man who hired it
evidently arrived on the 6:30 train at the West Station - I have
reason to believe that he does not live here, - and then took the
street car to this corner. The last ticket is marked for yesterday.
In the car he probably made his plans to hire a cab. So you had
better stay along the line of the car tracks. You will find me in
room seven, Police Headquarters, at noon to-day. The authorities
have already taken up the case. You may have something to tell us
then. Good luck to you."

Muller hurried on, after he had taken a quick breakfast in a little
cafe. He went at once to headquarters, made his report there and
then drove to Fellner's house. The latter was awaiting him with
great impatience. There the detective gathered much valuable
information about the first marriage of Asta Langen's long-dead
father. It was old Berner who could tell him the most about these
long-vanished days.

When he reached his office at headquarters again, he found telegrams
in great number awaiting him. They were from all the hospitals and
insane asylums in the entire district. But in none of them had
there been a patient fitting the description of the vanished girl.
Neither the commissioner nor Muller was surprised at this negative
result. They were also not surprised at all that the other branches
of the police department had been able to discover so little about