Tek Kill by William Shatner

From the publisher (source: The Internet Book List):
Walt Bascom is head of the Cosmos Detective Agency, and therefore is Jake Cardigan's boss. As Tek Kill opens, Walt is having a bad morning: five police officers broke into his house, threw him out of bed, and arrested him for murder. The video security system at the home of wealthy entrepreneur Dwight Grossman clearly shows Bascom shooting Grossman in the back. And telephone records show that Grossman had been making threatening calls to a former girlfriend - a woman now involved with Bascom. Despite what looks like an open-and-shut case against Bascom, Jake and his partner Sid Gomez must find a way to clear the boss's good name - and find the real killer. They have allies: Jake's son, Dan, is friendly with Grossman's sister, Susan. And Susan Grossman has been having flashes of telepathy, including a vivid vision of her brother's murder that does not feature Walt Bascom. Unfortunately, Susan Grossman is a user of the deadly drug Tek. The choice facing the police is obvious: they can believe what they see with their own eyes on videotape, or they can believe a known drug user who claims to have telepathic visions.

This book is part of the "TekWar" series.
Here are some other books from this series: