A small yet strange series of deaths of people working for the Ministry of Defense and the military hits Italy. Since all of the deaths seem to be accidental or suicides, no alarm bells start to ring anywhere. That's a problem, because the deaths are in fact murders and we the viewers the only witnesses. The Roman cop Solmi (Luc Merenda) is as unsuspecting as anyone else, until he is starting to investigate the death of the private detective Chiarotti.
During World War I, a German U-boat sinks a British ship and takes the survivors on board. After it takes a wrong turn, the submarine takes them to the unknown land of Caprona, where they find dinosaurs and neanderthals.
After spending decades living in the shadow of his more famous and successful sibling, Consulting Detective Sigerson Holmes (Wilder) is called upon to help solve a crucial case that leads him on a hilarious trail of false identities, stolen documents secret codes.
On Saint Valentine's Day in 1900, the female students at a private Australian school are given permission by their stern headmistress to travel to an ancient volcanic outcropping for an afternoon picnic.