Dan Casper arrives for his first day at Sun Hill, and immediately risks life and limb to rescue a girl attempting to kill herself on a dual carriageway. He discovers that the young girl, Rosa Salcedo, who is Brazilian, is deaf and is unable to lip-read, but when an interpreter finally turns up, Dan discovers that Rosa has been raped and beaten by her employers. When Rosa absconds from a safe house, Dan and Gary discover that she has been having a relationship with her employer's son, and that he is responsible for her pregnancy. As they discover Rosa has been taken to have an unwanted abortion, Dan and Gary race to save her, but despite their best efforts, the case has a tragic ending.
