It was a nice course, having two cases to solve was definitely fun.
It's helpful because you start seeing things better, and avoid thinking that cases are easy to solve, as an example:
In one of the cases reviewed, each time they had to take more and more fingerprints to expand the search for the killer, reaching even 50000 fingerprints at a time when there were no electronics databases availables. Despite not being checked in the door to door, avoid paying taxes and not voting, all things that made it harder for them to track the killer, they were able to pinpoint the one guy whose fingerprints finally matched.
Now obviously, maybe some cases aren't seen in that much detail, but remember, we're talking about cases that sometimes lasted for several years. So overall they did a great job in making a compact yet educational course for this subject.