Silent Witness Series 25

All six episodes from the 25th series of the BBC crime thriller starring Emilia Fox as forensics expert Dr Nikki Alexander. This series features the return of Amanda Burton as Sam Ryan. After the health secretary is assassinated during the launch of Sam's new company, Sam turns to the Lyell team for help, but Nikki is unsure whether or not Sam can be trusted.

The episodes are: 'History - Part One', 'History - Part Two', 'History - Part Three', 'History - Part Four', 'History - Part Five' and 'History - Part Six'.