Mason Black Series by Adam Nicholls

The clock is ticking. They're still missing. After handing in his detective badge, Mason Black now lives a stable life as a private investigator. But when the bodies of two children are discovered with messages written in blood, the pattern of a familiar killer emerges.Now, the Carter twins are missing, and only Mason can help. With his unique knowledge of the killer, he has an advantage over the San Francisco Police Department... moreThe clock is ticking. They're still missing. After handing in his detective badge, Mason Black now lives a stable life as a private investigator. But when the bodies of two children are discovered with messages written in blood, the pattern of a familiar killer emerges.Now, the Carter twins are missing, and only Mason can help. With his unique knowledge of the killer, he has an advantage over the San Francisco Police Department. While his marriage falls apart, he must choose between repairing his life or opening doors that were meant to stay closed. There's just one problem; neither solution will restore his faith in humanity.The Lullaby Killer is on the hunt, and Mason Black is always a step behind. As the trail reveals shocking secrets and surprising twists, you'll be holding your breath for the entirety of this gut-wrenching detective thriller. less

Following the events of 'Hush', Mason Black is under investigation as a body is found in his home. Meanwhile, another killer is on the loose, and only one man can track her down...

Most killers have a motive. Not this guy. Now living a balanced life, Mason Black – a private investigator with a troubled past – finally has time for the people he loves. For the first time in years, everything is going well. Until he meets Chris Healy. Three women have gone missing, and Mason is hired to find them. But when one of their severed heads is found with a message, Mason discovers that the two remaining girls are being held by a man known as Anarchy... moreMost killers have a motive. Not this guy. Now living a balanced life, Mason Black – a private investigator with a troubled past – finally has time for the people he loves. For the first time in years, everything is going well. Until he meets Chris Healy. Three women have gone missing, and Mason is hired to find them. But when one of their severed heads is found with a message, Mason discovers that the two remaining girls are being held by a man known as Anarchy. Anarchy – the newest killer in town – soon grows bored of the girls and seeks a deeper challenge, setting Mason in his crosshairs. It seems he will stop at nothing, as he forces the PI into playing his twisted game. less