Knife Edge

Knife Edge is the second full-length book in the series.

Summary
Sephy is a Cross, the privileged treated by noughts as inferiors, but Callum was a nought. Callum's brother, Jude, blames Sephy for the terrible losses his family has suffered and is determined to destroy Sephy's life by any means necessary. He meets Cara Imega, a cross, and befriends her to access her money.

Sephy, living with Callum's mother, Meggie, becomes increasingly fond of her daughter, Callie Rose. Callum's guard, Jack, delivers a letter, written by Callum before he died, saying that he never loved her and could not believe that she was stupid enough to fall for him. Meggie tries to make Sephy believe that Callum was forced to write the letter, but the letter is so hurtful that Sephy believes it and becomes full of postnatal depression. She meets Jaxon, a hot-tempered man with a band, The Midges. He offers Sephy a singing part, but the noughts are prejudiced against her because she is a Cross. She begins to neglect Callie Rose.

Cara spends a lot of time with Jude. Although he loathes Crosses, he begins to fall in love with her. Frustrated and confused with his feelings for a Cross, Jude beats her severely and runs off with a large amount of money. After she dies in hospital, Jude is eventually arrested and charged with Cara's murder. He is virtually certain to get the death sentence since his fingerprints are all over her apartment and had been seen with her by several witnesses.

Sephy struggles with seeing Meggie losing the last remaining member of her family. Sephy decides, for Meggie's sake, to give Jude a false alibi for Cara's death. That works, and after serving a few months in prison for Liberation Militia membership, Jude accuses Andrew Dorn of Cara's murder and calls him as a government informer; Andrew is soon shot dead by the LM. Jude, even though Sephy saved his miserable life, still holds his grudge against her and still plots a terrible revenge.

Sephy's life begins to fall apart. The crosses hate her because she helped Jude escape the noose, the noughts because she did not come to his aid sooner. She hugs her daughter too tightly while she sing the famous song "Rainbow Child". Callie Rose stops breathing, and Meggie screams at Sephy, "What have you done?" The book concludes in a cliffhanger without stating whether Callie Rose will survive.