So Shane was a liar but quite conveniently wasn’t lying when he said that he didn’t remember Luke being in the house. As to don’t know and can’t remember answers have you read Steven Kelly’s testimony? Is he a liar too?
Of course he wasn't lying. If he'd have seen his brother, surely he would have said so. It would've saved his brother from going to prison. As I said, it would have been impossible for him not to have seen or heard his own brother cooking dinner at that time; no amount of memory loss, especially in a 21-year-old full time car mechanic, could explain him not seeing or hearing LM that day. Once he saw the pics of poor Jodi, he did the right thing and told the truth -- his human side coming to the fore. All this nonsense about the police bullying SM, him being intimidated by his dropped charge of perverting the course of justice or fearful of perjury would make him say he didn't see his brother when he actually did is ridiculous; it was his own flesh and blood possibly going to prison forever - if he really did see him surely his conscience would be clear regardless of what happened to him, LM or CM, and that he would be shouting it from the rooftops from the beginning of the investigation til the trial that he DID SEE his brother in the house at those times. It was crucial evidence. Why would he withhold it if his conscience was clear and he genuinely saw LM at those times? It was extremely telling that he didn't. All he had to say was he was there, but he didn't, and a big song and dance was made about LM's whereabouts. He said he genuinely didn't remember seeing his brother simply because LM wasn't there. "Could've been there" was a cop-out, merely thrown in because he didn't want to fully drop LM in it.
S Kelly had a solid alibi in his own father. Besides, do you think Janine would cover for a mere teenage romance, over her own sister - someone she got on well with and let borrow her clothes?