investigators found two floppy disks on joe snodgrass' desk which they 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. >> joe snodgrass was a law enforcement official. if someone is investigating, well, naturally, you try to cooperate. try to help so you can get him off the suspect list. >> as he examined the disks, they were distracted and he pulled out a pair of scissors