Tantei Jinguji Saburo: Fukushuu no Rondo

The 16th installment in the Jake Hunter series, as well as the 25th anniversary. The story starts with Jinguuji waking up, only to find himself bound and being used as a punching bag by some gangsters. They seem to want information about a certain something from Jinguuji (and they also seem to have a personal grudge against him), though he honestly has no idea what they're talking about. Jinguuji...