For the mother of a murdered son, a small change in the law could make a life or death difference for other parents who fear for their adult children.

Fiona’s autistic son Christopher was violently murdered in his own home by a criminal who had exploited him.

She’s now fighting for other families' concerns to be acted on - a campaign supported by MPs from all three major parties.

But will the government listen?

Romilly Weeks and Elisa Menendez tell Geraint Vincent what you need to know.