By the light of the moon - Dean Koontz

When artist Dylan O'Connor pulls into a motel off the Arizona interstate highway, all he wants to do is relax with his autistic brother Shepherd, and get a good night's sleep. Yet within the hour he finds himself bound, gagged and being injected with some mysterious fluid by a lunatic 'doctor' who claims that Dylan will be the carrier for 'his life's work'. Jillian Jackson, a comedian, is midway through her tour of seedy cocktail lounges and and second-rate comedy clubs, accompanied only by her pet pot plant Fred. Her plans for stardom are dramatically altered, however, when she too falls victim to the same eccentric scientist, who makes off with her beloved cadillac. The doctor warns his victims that he is being pursued and that they too are now targets. If they are caught, they will be killed. Both are sceptical, but when 3 black Chevrolet Suburbans come screaming into the motel carpark and Jillian's stolen car is found in flames, they begin to wonder if the lunatic doctor wasn't so mad after all...