Silent Witness

Sam is now teaching at London University but is called in by Inspector Peterson to help investigate the ditching of a helicopter. Wife of the captain accuses the chief executive

Sam's skills are required when 10 bodies are recovered from the North Sea. The discovery that a new rotor bolt was fitted to the helicopter raises more questions.

Sam Ryan takes on a gangland murder case to help whom she believes to be innocent. Mike Georghiou has been found dead and his brother thinks that McNally is responsible.

While Sam continues her investigation, she is confused by DI Lightfoot's insistence that McNally's death was suicide. McNally's daughter is convinced that her father would never kill himself.

When a dozen people die in a cinema fire, Connor is in charge of the investigation. Sam Ryan is coming back to London.

Having learned that a criminal may have been wrongly convicted for murder, Sam and DCI Connor are eager to get at the truth - Sam more than Connor. .