K S Ferguson: 4 books

Light bulbs talk to River Madden; God doesn't. When the homeless schizophrenic unintentionally fractures a dimensional barrier and accidentally steals a gym bag containing a million dollars, everyone from the multiverse police to the local crime boss—and an eight-foot tall demon—is after him....

Rafe McTavish, charming self-made businessman, owns the most successful private security firm in the galaxy. Estranged from his family since his wife's bloody suicide fourteen years earlier, he's nevertheless honor-bound to find out why his brother-in-law, CEO of the mega-corporation...

Light bulbs still serenade River Madden, but at least the hapless schizophrenic has a job now. As the newest recruit at Dimensional Protective Service, River's anxious to prove himself. His first assignment: rescue a scientist who's been lost in D-space while crossing between dimensions. When...

Rafe McTavish, security expert and new CEO at interplanetary mega-corp EcoMech, continues his pursuit of a ruthless blackmailer—with the help of his undercover ally, Kama Bhatia, computer hacker and corporate spy. When Rafe's arrival on EcoMech's frontier colony world ruins their adversary's...