First Book: Click 1:
The first Click book tells the story of a rich beautiful youngish woman, Claudia Christiani (somewhat nervous/ashamed of sexuality), her husband Aleardo, a PI named Burt Crow, a Doctor named Fez, Claudia's friend Jeanne, a Count and his granddaughter, and various minor characters. Not a cast of thousands, but certainly crowded.
Dr. Fez desires Claudia, but is rebuffed. After learning about a new invention, and believing that Claudia is a little too uncomfortable about her body and her sexuality, Dr. Fez acquires this new invention and uses it on Claudia. Claudia is kidnapped and has a "receiver" surgically implanted in her brain. A transmitter is used to send signals to the receiver, and the receiver sends signals to certain nerve endings in the brain that cause Claudia to become incredibly horny, depending on the transmitter setting.
After Claudia returns from being kidnapped ("Your wife turns out not to have been kidnapped . . ." said by Crow; she says that she fell down and doesn't remember what happened), Dr. Fez uses the device in numerous situations. Claudia is attacked by the transmitter and driven rather uncontrollably horny at the mall while trying on clothes, at a party at her home, while in her bedroom in front of the butler, and at the movie theater in front of her husband. The husband is understandably annoyed when his wife starts sucking the man in the seat next to them in the theater, and then enjoying a good screw with the guy against the theater wall. They go to a doctor, find out about the doctor informs them about his stolen invention, and Claudia goes on vacation (a cruise) until they can find the transmitter. The "man" followed Claudia. Claudia tries to get further away by going to the mountains, and is followed again.
The first book has a solid plot, good characterization, and is well-drawn.
Click 2:
Claudia is now a reporter (or anchor) on "SOS Planet." A strange man calls into the show about finding a transmitter in the Alps that controlled a woman. Soon afterwards, the man turns up at the studio, and the games start again. Specifically, they start in the studio's men's restroom. Claudia ends up forced to ride her bicycle through traffic without pants (or anything else on the lower body). It would appear that Claudia's old husband is trying to get her into trouble. At one point, the man with the transmitter sets it to maximum and points it at the television screen. Claudia then is lost at sea for ten days. After being found, an interesting tape turns up.
The second book has a somewhat less solid plot, good characterization, and is well-drawn.
The third book in this collection is Click 3.
The third book involves a religious figure in the Amazon that believes that he could use the energy of a woman at the edge of orgasm to communicate with aliens. Claudia visits this man and attempts to stop him but becomes entangled in his activities.
The third book is about the same level of quality as the second book, which is slightly worse than the first book. The characters have personality, there's a somewhat more solid plot than the second book, and the series continues to be well-drawn.
Overall, the collection includes scenes of humiliation, sex, and whipping.