>> now, i'm going to be point-blank with ya, if you knew anything about this you would tell me, right? >> absolutely. >> when was the last time you took some methadone? >> today. >> today? >> uh-huh. >> reporter: so michael had used methadone on the morning of kay parsons' murder. now investigators wanted to know more about where exactly he was when the assault happened. michael said his mom becky had dropped him off at a job site just before 7:00 a.m. to do some house painting. >> when did ya tell your mom you had this paint job? when did you tell her you were -- >> told her a little while ago. this morning. >> reporter: but here's the thing. he didn't do any house painting that day. and he initially lied to his mom and investigators about working. >> and the whole reason you lied to us was because you didn't want your mom to find out that you didn't really have a job? >> yes, sir. >> that just -- that blows my mind. >> reporter: and there was something else that really troubled investigators. if michael was the attacker, he had cleaned himself up before deputies got there.