At police headquarters in steamy, tropical Darwin, a cop is brutally slain - right under the noses of his colleagues. The equally savage murder of select members of Darwin's legal fraternity follows, leaving investigating officers completely baffled. Is there a serial killer at large, and what connects the victims? These are the questions lead homicide investigator Russell Foley struggles with, while facing his own personal demons brought about by a failed marriage and the disintegration of his relationship with his best friend.

When you’re in trouble, you call 911. When cops are in trouble, they call Nick Ryan. Every cop in the city knows his name, but no one says it out loud. In fact, they don’t talk about him at all. He doesn’t wear a uniform, but he is the most powerful cop in New York. Nick Ryan can find a criminal who’s vanished. Or he can make a key witness disappear. He has cars, safe houses, money, and weapons hidden all over the city.

On the first day of school in a New Orleans suburb, terrorists hijack a school bus full of children. Corporal Alex Shepherd, decorated sheriff’s deputy and SWAT sniper, is critically injured trying to stop the attack and save his wife and daughter. Waking from a month-long coma, Shepherd finds his girls are gone and the world has moved on. With no arrests made, his frustration at the system’s failures forces him to take matters into his own hands. His thirst for vengeance takes him from New Orleans to the brutal battlefields of Syria, where he gains fame as a ruthless sniper.

In 1958, 19-year-old Kat Caswell loses her best friend in a brutal accident. In an attempt to flee from her past, she hops a freight train, leaving rural Indiana behind. Kat soon discovers that the extreme danger of train jumping is a welcome distraction from her pain.

CIA Black Ops agent John Smith is on his latest assignment in London. Little does he know - it'll be his last. Barely surviving an attack on his life, Smith lays low for six months until he returns to the United States. His flight is strangely diverted to Philadelphia where he meets a mysterious stranger who knows all about his past and recruits him for a job. Needing a new identity, Smith becomes Michael Recker. He then tries to prevent bad things happening to innocent people while also interacting with the city's different crime factions.