S2·E22 Infanticide or Murder?: Part 1

A 15 year old schoolgirl has given birth to an illegitimate baby. Within a week of the birth, the body of the baby has been found buried in the girl's back garden by police acting on a tip-off. The schoolgirl's father (the baby's grandfather) has been charged with the murder of the baby after it was discovered that the infant had been strangled.