<p>Sequel to The Colours of Corruption.<br><br>Three people on a crowded train, brought there by the same crime.<br><br>Archie Price, painter and police artist, blessed with a photographic memory, is travelling to Chelmsford to testify in a murder trial.<br><br>The accused, Freddie Porter, is under police escort in the guard's van.<br><br>Freddie's sister, Polly, is desperately trying to escape her brother's gang before they realise what she's do...