In agreement with most of the other reviewers (Jan 2022) I think this is one of the high points of the series. It has suspense, shock and the family dynamic within the team. It also has a strong tugging of the heartstrings for the two half-brothers and the other children so seriously betrayed by the governmental system. I sympathise strongly with the review by Zenpups - they should know that (I believe) the world recognises that the vast majority of foster parents worldwide step into the role simply out of love for the children in their care, with nothing in their hearts other than a desire to protect and support any vulnerable young of the species - I think the drive comes from deep in our psyches. The same is true in other areas, such as penal systems - I believe that the vast majority of police and prison officers are honest, upstanding people, doing a job that they feel benefits society, and doing it honestly and well. But we have to recognise also that in any large body of people some will be corrupt, some will be weak and corruptible. Whenever money or benefits enter the picture, some will fall. I'm afraid that the USA is likely to be particularly prone to this, with its high proportion of privately run for-profit prisons, its (to the outside world) ridiculous healthcare arrangements (I won't say "system"), its gang/drug/gun culture a cancer in society and subtly infecting law enforcement, and such situations as we saw in the programme, where foster parents take on that role with no real care in their hearts, but simply to gain the benefits allowed by the government to anyone appearing to have that role. Zenpups need have no worries - the world recognises that they themselves are there for their children with absolutely the right motives.