Nikki (Emilia Fox) escaped being buried alive by a Mexican drug cartel at the end of the last series, so it’s hardly surprising that the traumatised pathologist is on gardening leave while
she recovers.

However, when a friend and fellow pathologist disappears, she’s recruited by police to keep tabs on the prime suspect David Cannon (Julian Rhind-Tutt) – who works with the missing woman – by seconding him to the Lyell Centre.

Rhind-Tutt is excellent as the annoying new arrival – for starters, his ring tone is You Sexy Thing by Hot Chocolate – who helps the team as they attempt to find out how the body of an entrepreneur ended up in a reservoir.

The story’s concluding part is on tomorrow at 9.00pm.