The President of Claritiva Software is kidnapped at gunpoint. FBI Special Agent Cliff Knowles is the first to respond when the crime is reported. But the report is suspicious in many ways and the front office is skeptical the kidnapping is real. Knowles must fight his own bureaucracy while trying to rescue the victim and catch the kidnappers. This gripping novel will have you on the edge of your chair from the first chapter.
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X-rays can kill cancer cells and save lives when administered properly. They can also kill people when things go wrong - a fact learned the hard way by retired FBI agent Cliff Knowles. Hired to unravel the cause of some mysterious overdoses, he gets too close to the truth and finds his own life on the line. Inspired by actual cases he worked as an FBI agent in Silicon Valley, the author weaves an absorbing tale of greed, technology, and terrorism in this high-tech legal thriller. After reading Fatal Dose you'll never look at an X-ray machine the same way. Fatal Dose follows geocaching FBI...

Newly retired from the FBI and alone after the tragic death of his wife, Cliff Knowles takes up geocaching. While looking for a cache in the mountains he comes across a human skeleton and reports it to the sheriff's office. Then a second body is found - a fresh corpse this time - right after Cliff found another geocache nearby. When it turns out the first remains are those of a fugitive he was supposed to arrest years earlier, he becomes a suspect in a multiple homicide investigation. He has no choice but to use his sleuthing skills to identify the mysterious cache owner, known only as...

Cliff Knowles swore he'd never help a defense attorney free a murder suspect, certainly not one who shot an FBI agent point blank in front of witnesses while yelling obscenities. But then he never expected that an FBI agent he worked with would be the defendant. For the first time, Cliff tells the story in his own words.

When a court ruling once again halts the carrying out of the death sentences of hundreds of condemned murderers, a frustrated vigilante organization decides to take matters into its own hands. In a mysterious and grisly act of horror, San Quentin's entire population of condemned prisoners is executed in the dark of night. But how? And who are these vigilantes? Answering those questions falls to retired FBI agent Cliff Knowles, now a successful lawyer. His lover, Special Agent Ellen Kennedy, is intent on completing a geocaching challenge known as the Fizzy Challenge, but inadvertently turns...

Retired FBI agent Cliff Knowles thought he was being hired by a Fortune 500 company just to find out why their sales of spare parts were down. He soon learns that where there's money there's mayhem - and murder. His investigation brings him to southwestern Utah where he finds that an employee of the company he's investigating recently lost his head - literally. Coincidence? Not a chance. When Cliff decides to venture into the desert to hunt a geocache, he is unaware that he is being hunted, too. In this harrowing tale of greed and guile, Cliff's survival depends on his only weapon - his wits....

San Diego is renowned for its sunny weather and beautiful beaches, but it has its dark side. It is the location of one of the largest mass suicides in American history. Thirty-eight members of the Heaven's Gate cult left their bodily "vehicles" hoping for their souls to be taken aboard an alien space ship traveling behind the Hale-Bopp comet. Now, decades later, it looks like an offshoot cult is following the same pattern. One of the victims is the sister of private eye Cliff Knowles, a sister he hasn't seen in years. He has trouble accepting the conclusion of the police that it's a suicide....