Police forces from across the country appeal for viewers' help to solve serious crime.
At the end of November, 18-year-old John Threlfall was murdered at his home in Lancashire. Police want to trace the strangers asking directions to the house on the day he died. Hertfordshire police want to find the man who raped a young woman, then forced her to drive him to Epping Forest, where she crashed her car to escape. Plus the hunt for raiders who fired indiscriminately in the centre of London after robbing a security van. There's an update at 11.15pm.
Presented by Nick Ross and Sue Cook.
Details on Ceefax page 618
TELETEXT SUBTITLES: page 888
INFORMATION: if you can help on these or other cases featured, phone lines will be open on [number removed] from 9.30pm until 12 midnight tonight.