What do you think happend to her?

I think Phil probably threatened her and/or convinced her she was an unfit mother

I with you SFG. I think he will have threatened to tell the police that she was the one who shot him if she wouldn`t let him take Louise. It still doesn`t explain all the mystery e-mails with Mel and Sonia though, so don`t know what the script writers have got up their sleeves!

As Mark was away from Walford when it happened, maybe he had something to do with it. I think it would be too simple to have Phil just push her off a cliff.

Mark didn't seem to mention Lisa at all when he came back unless I missed and episode somewhere

EXACTLY!!!!

We knew exactly where Phil went to, but we have no idea where Mark really got to do we?

Well this is the question is she dead or did he just convince her to give louise over to him

or as you have all said Did Mark kill her after the way she treated him with Phil mitchell

well we will all soon find out and it will be a good one to watch

Did you see Lucy Benjamin on Today with Des and Mel?
One of them asked her if she was dead and she replied 'I don't know yet, we filmed several conclusions'.

Makes ya wonder!!!!!

I think she has got her self into some sort of trouble and was glad when Phil came for Louise.

Not sure though as there is seval ending being recorded looking forward to it though.