In message , at
08:06:23 on Fri, 16 Jan 2015, contrex
remarked:
Monday and Tuesday's "Silent Witness" has a London Tube theme.

There was trailer showing a chase through a train and into a tunnel; SCD clearly visible.

SCD?

It opened with someone under a train, beggars on the pavement outside
stations, and later it hinted that tube trains were the way the perps
were getting around London. I've not seen pt2 yet.
--
Roland Perry