When Washington D.C. is terrorized by a serial killer, the only piece of evidence that FBI Special Agent Margaret Lukas (Natasha Henstridge) has to work with is a ransom note written by the perpetrator. Desperate to solve the case before the killer strikes again, Agent Lukas turns to renowned handwriting analyst Parker Kincaid (Tom Everett Scott). Kincaid is a former FBI agent who quit the force after his young son was attacked by an escaped killer that Kincaid had helped capture. While joining forces with Lukas to track down the murderer, Kincaid is also fighting his ex-wife (Rena Sofer) for what's most dear to him -- the custody of his children. This thriller is based on New York Times best-selling author Jeffery Deaver's ("The Bone Collector") mystery novel of the same name.