The episode begins unconventionally with the resolution of the case.
Unwittingly this draws a next to be.
The three detectives leaked mystery leads to an imaginary meeting between Sherlock Holmes (aka Justus Jonas) and his opponent Professor Moriarty, the great unknown, the power and resources has the entire headquarters of three ??? to bug to let Titus Jonas arrest and Peter to place a tracking device animals without his knowledge under the skin.
To put it briefly in the 70 minutes to pass a lot of unexpected and sometimes hilarious (Justus is at a 10-km drive to the starting line) processes and Justus Jonas even puts on a or "his motorcycle" as means of transportation.
Over the radio play ventilate the three ??? the riddle and find out that they have to deal with a dangerous crime lord, the Justus, Peter and Bob finally forcing a perfidious showdown and it has used for his own purposes.