What goes around comes around. Jack Nightingale learned that as a cop and discovered that it was just as true in the world of the supernatural. His life changed forever on the day he failed to stop a young girl throwing herself to her death. Ever since, he’s been haunted by thoughts that he could have done more to save her. Now her cries for help are louder than ever. Is she trapped in eternal torment? Or are the forces of darkness torturing and deceiving him in order to regain the ultimate prize – his soul?

When a murdered young girl miraculously returns to life saying she's spoken to God, it's clear that sinister forces are at play. And when those who speak to her inexplicably commit suicide shortly afterwards, Nightingale is called in. He discovers a demon has possessed the girl's body…and the only way to banish it is to kill her. And that's not all he has to deal with. After a farmer kills eight people before turning the gun on himself, the press label him as a Satanist.

Jack Nightingale fights his battles in the shadows - in the grey areas where the real world meets the supernatural. But when he arrives in San Francisco to take on a group of Satanists bent on opening a doorway to hell, the danger is out in the open and all too real. The Apostles - a Satanic coven using murder and torture to pave the way for a demon to enter the real world - realise that Nightingale is on their tail and unleash their own brand of monsters to take him down.

Teenagers are being possessed and turning into sadistic murderers. Priests can't help, nor can psychiatrists. So who is behind the demonic possessions? Jack Nightingale is called in to investigate and finds his own soul is on the line.

When Jack Nightingale learns that there is a mysterious list of children who are at risk, he takes the case, spurred on by the fact that he knows one of the names, and that makes it personal. His investigation brings him up against a demon from hell who is being used on a mission of revenge. But if Nightingale is to save the children, and his own soul, he’ll need help from an old adversary.

New Orleans. They call it the Big Easy, but there’s nothing easy about Jack Nightingale’s latest case. Dead usually means dead, but corpses are coming back to life and carrying out targeted killings. The supernatural detective is called in to investigate and he soon discovers that Voodoo is behind the spate of murders. Whoever is making the dead rise obviously has a plan - a plan so heinous that even the Devils of Hell are concerned.... But there are darker forces at work. And they have Nightingale in their sights. His life - and his soul - are on the line.

Las Vegas is known as Sin City. And what happens in Vegas usually stays in Vegas. But someone in the city has powers that allow them to strike anywhere in the world and take lives—for a price. Jack Nightingale has a track record of dealing with occult killers and so far he has always come out on top. But this time the only way to find the killer is to set himself up as bait. And this might be the time when his luck finally runs out.

Mexico is famous for its rich culture, ancient ruins, dazzling beaches, and spicy cuisine. But there is a darker side to America's southern neighbour, with vicious gangs dealing in drugs. extortion, money laundering, human trafficking and contract killings. Jack Nightingale came across his fair share of villains when he worked for the Metropolitan Police in London. But nothing could prepare him for the evil that was waiting for him when he crossed the Rio Grande river and entered Mexico - an evil that is hunting for an immortal soul. A very special soul.

Supernatural detective Jack Nightingale used to be a police negotiator in a previous life—back in the days before he confronted devils and demons for a living. So when a young woman embarks on a killing spree in a Houston mansion, Nightingale is the perfect choice to intervene. But there is nothing that Nightingale can do to stop the slaughter. And there is worse to come. More killings. More bloodshed. More young women with murderous intentions.

Eddie “Lucky” Brennan is a professional killer. A gun for hire who has been leaving bodies across Chicago for more than a century. Lucky’s long life isn’t an accident. It’s payment. Saved from death by a demon from Hell, he has spent the last hundred years repaying the debt, with murders. Now the body count is rising, and the demon’s ambitions have grown. This time, it isn’t just about murder. It’s about turning Chicago into the first foothold of Hell on Earth.