Still dark

New Year's Eve should be a time for celebrating. A chance to spend time with loved ones and look forward to the year ahead. For DSI William Lorimer, however, this New Year's Eve will be one that he will never forget. Called to a house after gunshots are reported, the carnage he finds there will have a powerful impact on his life - leaving him questioning his future with Police Scotland. Meanwhile, the man who eluded police capture during Lorimer's last investigation - the Quiet Release case involving the euthanasia of vulnerable patients - is back, and this time he's aligned with a powerful gangster from Glasgow's underworld. As Lorimer struggles to return to duty and stop this mystery killer once and for all, he discovers that there are forces high up within Police Scotland that are protecting the gangster who holds the key to finding the man they are looking for. Can Lorimer and his team get a killer off the streets for good before more innocent people die?