  What exactly is Dark Matter? New theories for what really constitutes Dark
Matter appear to make the news headlines every week. At a slower pace, these
theories are slowly being eliminated. We revisit this scientific thriller and
make the case that condensed neutrino matter is a leading suspect. We provide a
forensic discussion of some subtle evidence and show that independent
experimental results due out in 2019 from the KATRIN experiment will either be
the definitive result or eliminate condensed neutrinos as a Dark Matter
candidate.
