. >> detective ron parmenter was thinking t same way.e wanted to talk to kevin about what that something else might be, but he held off. >> i was giving him his space because i thought he needed time to deal with the tragic death of his wife. >> according to his sister, chris ann, kevin was an emotional wreck when he heard what happened. >> i'm sure that there was some guilt because he worked nights, and he wasn't home. he's like, never thought this would happen. >> did you think he had anything to do with this? >> nothing. >> and you could prove that kevin wasn't even in the house at the time. >> absolutely. kevin was on the ohio, michigan border at the time. >> still, parmenter felt kevin might hold the key to solving the riddle of this case. >> why keep going? you got your suspect and she's got the weapon in her hand. >> just doing my job as a detective. i was trying to find out why. >> it was the one central question that continued to plague detective parmenter and drive him forward. >> you're crossing are your fingers and thinking w