内容简介：
A wife finds her husband's body lying in a pool of blood in their garage. It appears to be suicide with his own .38 revolver. Detectives Clay O'Neal and Lois York find a suicide note and a bloody "E," apparently written by the deceased. Strangely, the deceased's finger points at a damaged model train layout in the garage. The coroner's assistant is murdered while delivering evidence to the detectives. A sniper narrowly misses O'Neal. O'Neal's house is bombed. Fearing for their safety, the two detectives play hide and seek with an unknown killer. With car bombs and raspy phone calls, the killer stalks them. Are they investigating a suicide or a murder? Meanwhile, O'Neal and York realize that they have strong feelings for each other, and they continue their investigation, with their own lives in peril.