To sum up.
Alice is indeed Sophie. Sophie looked pregnant when they took her and she had a baby girl who she said died.
Julien spoke french to her and she understood. Gemma also doesn't think it is her daughter. Sophie then leaves and gets petrol. Her brother locks her in the shed and she sets alight to it. The dad tries to save her and that is how he got burned.
The promise was Sophie wanted to tell Mr Hertz, the butcher who is in prison in the present day, that she was sorry.
Butchers wife is Aldie woman and has false teeth. She was attacked in 2014.
Daniel Reed said he found money being paid to someone by his dad and what it was for made him sick.
Julien said Henry Reed didn't kill himself.
Brigadier talked about a beautiful girl with place skin, this must have been Alice or Sophie. I reckon he does have dementia and will give some stuff away but will probably put down to his illness and not taken seriously. He was definitely involved.
Yellow van is in the woods in Switzerland, now spray painted red.
Gemma has found the roller coaster picture. It is Alice in a blue top (yes I thought it looked like a boy/man too) and Sophie who is the one who returned.
Sophie also gave it away when she referred to Gemma by name. Alice would have called her mum.
Sam did something that was a cry for help, not related to the fire.
Gemma knows Sam is having an affair with the brigadier daughter.
Wonder if brigadiers daughters baby ends up involved?