investigators found two floppy disks on joe snodgrass's desk, which investigators thought might hold evidence of his complicity with his wife's murder plot. but before they checked the disks, investigators wanted to make sure that they actually belonged to joe snodgrass and weren't someone else's. so, they asked him to come to the interrogation room to identify them. >> sergeant snodgrass was in a cooperative posture. joe snodgrass was a law enforcement official. so, if someone is investigating, well, naturally, you try to cooperate, you try to help. so you can get him off the suspect list. >> as he examined the disks, investigators were distracted and he pulled out a pair of