Good Company - David Beeson

When death joins the party, Martin is forced to accept that what he took for good company has turned toxic. Prospects couldn't have been better when the woman he desired led him into a career he had never dreamed possible. But he hadn't taken into account human fallibility, least of all his own. Or how business difficulties might blow simmering tensions into explosive, even lethal conflicts. Soon, Martin is caught in a seemingly random trail of disasters. It's as he works to escape their clutches that he makes a discovery that finally opens his eyes: behind many of the blows he has seen falling to deadly effect, an ingenious mind has been at work. Would it destroy him too? Or free him to face a better future, in better company?