Killed in the Fog — William L. Deandrea

During a trip to England, a fog of mystery threatens Matt Cobb’s vacation—and his lifeMatt Cobb is ready to quit. His job as a special projects VP at a giant television network involves intense troubleshooting and an egotistical boss, and both have taken their toll. The network president has other ideas, though, and persuades him that all he needs is a long vacation. So Cobb takes off for London, with his dog and his lovely fiancée, Roxanne, by his side.  But work won’t release its grip so easily, and when Cobb visits an old friend at a network affiliate, he can’t resist a plea to help with their security team. And when he’s directed to ignore the time-honored rule against the delivery of mysterious envelopes, Cobb becomes not only a witness to a murder, but also the prime suspect.