If you live in Devon and you marry a convicted paedophile who you want to "Sleep with" Devon LA said you can lock your children in every single night as long as they have a monitor so mum can be alerted when the child want a toilet break, and Devon police force do not arrest you or prosecute you but in Walsall if you lock your child in their bedroom just twice to protect them from harm have a night light and right next to moms room so can knock the wall or call, you are arrested held in a cell for just under 12 hours and then prosecuted in the crown court. So it depends on where you live as to what the law is.