>> it felt like rubber necking in a car crash. wow, somebody you knew could be murdered. >> reporter: who could want a man as nice and generous as ken dolezsar dead? but then it's almost a truism of police work where money goes trouble often follows. the more money, the bigger the trouble. and in this case, an extra dollop. the man's fortune wasn't really his, strictly speaking. he married into the bulk of it. the fortune came from a company his wife founded with her former husband. the divorce had been nasty. family loyalties bitterly divided. and some family members weren't the least bit happy that ken was making investment decisions. detective carriger contacted ken's brother and broke the news. >> dropped down to his knees, and he said it's that [ bleep ] derrick. >> reporter: a moment of unguarded grief and rage and thus a possible suspect. derek mower, ken's adult step-son. >> it was apparent there were