Sharon McCone is hired by her husband's security firm to track down the "ever-running man", who has been setting off explosive devices at their various offices. She doesn't have to look for long. When McCone narrowly escapes an explosion in her apartment building, she catches a glimpse of his retreating figure. The ever-running man is dangerously close - and it seems that anyone connected to the firm is within his deadly range.

Complicating matters is McCone's discovery of the firm's shady past. Forced to question her reluctant husband, Hy, about its history of corruption, she puts her marriage in jeopardy. But uncovering the secrets of the firm may be the only way she can save her husband's life - and her own.