When her husband becomes one of dozens of commuters who are killed in a tragic Grand Central Station accident, Karen Friedman struggles to rebuild her life with her two teenage children, until a pair of strangers arrives demanding large funds from her late husband's investment business.

Investigating the murder of a close friend, private security investigator Ty Hauck discovers that a seemingly unrelated series of events--including the sudden bank transfers of millions of dollars--point to a reckless plot that could damage national security.