Bloomsbury Children's Books, 2010

Sixteen year old Cassandra Renfield has seen the mark since forever: a glow around certain people as if a candle were held behind their back. 

The one time she mentioned it to someone else, the mark was dismissed as a trick of the light.  So Cassie has kept quiet, considering its rare appearances odd, but insignificant.  Until the day she watches a man die.  Mining her memories, Cassie realizes she can see a person's imminent death.  Now how or where, only when: today.

Cassie searches her past, her philosophy lessons, even her new boyfriend for answers, answers, always careful to hide her secret.  How does the mark work?  Why her? 

Most importantly: if you know today is someone's last, should you tell them?

October 9, 2010: The Mark optioned for television by Warner Bros. with Executive Producers Marta Kauffman

Bloomsbury Children's Books, September 2011

Cassie Renfield knows the mark tells her when someone is going to die and that she can intervene and attempt to change fate.  But she still doesn't understand the consequences, especially whether saving one life dooms another. 

With no family left to offer guidance, Cassie goes in search of others like her.  But when she meets Demetria, a troubled girl who seems to have the same power, Cassie finds the truth isn't at all what she expected.  And then there's her heady new romance with bad boy Zander.  Dating him has much graver repercussions than Cassie could ever have imagined, forcing her to make choices that cut to the essence of who she is and what she believes.