in may 2006, freddie goes to hospital seriously ill with bleeding on the brain. a few days before the hospital admission, little mo admits to her boyfriend oliver cousins (tom ellis), who is also a gp, that she sometimes gets very irritated with freddie when he cries. when oliver hears that freddie's injury must have been caused by shaking or rough handling, he admits what little mo has told him to a paediatrician, briony campbell (rae hendrie), at the hospital. while the hospital believes that little mo may have shaken freddie, little mo suspects that ben mitchell (charlie jones) may have hurt him in some way as they were left unsupervised together just before the incident. little mo confronts ben and shakes him in irritation when he tries to run away.