Kind of suspicous....
First off why did this guy kill the other guys wife? How did he know who killed his wife? How did he know exactly where to go and why'd he get there so fast... Here's my hypothosis, The guy hired the murderer to kill his wife because he found out she was sleeping with his boss, so he hired a killer to murder her so he could collect a major life insurance policy and her inheritance from her fathers very sucessful mining buisness. But then he killed the murderer to throw off the cops so they wouldn't suspect a murder-for-hire deal... yes now the story makes perfect sense...