A famed mystery writer and her doctor ex-lover solve her daughter-in-law's murder.

A young girl on a train finds out that her companion is a serial killer.

Marine officer Rob Cutter and his wife Barbara have a son named Johnny. Rob discovers that two newly delivered helicopters in his squadron have crashed because a defective part, a C-ring, has been made of a weaker, less expensive alloy. Before Rob can go public with this, Rob is killed on the orders of corrupt General Howard, who did not want Rob to go public with the defective part. Howard believes that Barbara, who is also a marine, now has the part, so Howard and his henchmen set out to kill Barbara and Johnny and get the part, but Howard is underestimating what Barbara is willing to do to protect Johnny.

A westerner named Casey, studying Ninjutsu in Japan, is asked by the Sensei to return to New York to protect the legendary Yoroi Bitsu, an armored chest that contains the weapons of the last Koga Ninja.

Two investigators of paranormal hoaxes, the veteran Dr. Margaret Matheson and her young assistant, Tom Buckley, study the most varied metaphysical phenomena with the aim of proving their fraudulent origins. Simon Silver, a legendary blind psychic, reappears after an enigmatic absence of 30 years to become the greatest international challenge to both orthodox science and professional sceptics. Tom starts to develop an intense obsession with Silver, whose magnetism becomes stronger with each new manifestation of inexplicable events. As Tom gets closer to Silver, tension mounts, and his worldview is threatened to its core.