been poisoning with insulin. in a couple of the cases, it's by force—feeding these children milk. in several of these cases, it's through injecting the child with, with air, air bubbles that, you know, it can cause great harm to, you know, even adults, but to vulnerable babies, it's, it's a life—threatening situation for them. evidence suggests there was a killer on the unit. but how do we know it was lucy letby? this prosecution document shows which nurses were on duty when babies collapsed or died. some were only present on one or two shifts. some were there on six or seven. but lucy letby was always there.