Still Dark: (14) - Alex Gray

New Year's Eve should be a time for celebrating. But for Detective Superintendent William Lorimer, this is one night he will never forget...

Called to a house after gunshots are reported, the carnage Lorimer finds there leaves him traumatised and questioning his future with Police Scotland.

Meanwhile, the body count is rising on Glasgow's streets. A number of known addicts are dying from accidental overdoses, but where would the city's poorest residents get hold of high-quality morphine?

As Lorimer struggles to return to duty, he spots a link between the deaths and an old case involving the euthanasia of vulnerable patients. It seems the killer has resurfaced – and it's up to Lorimer and his team to get them off the streets for good.