Eighty Million Eyes is two simultaneous and unconnected investigations. One is about a really scary psycho guy who is stalking a woman. The other is about a successful comedian and talk-show host who dies mid-show of poison. Both were compelling and the one about the stalker was actually quite brutal and scary. It had one part that I would almost say fell into the exploitative, but just by a smidgen. It definitely freaked me out as I was in the middle of biting into a mayonaissey burger at the time of reading and it was all about a woman who after being brutally beaten discovers an even more horrible thing on her stomach. Yuck!
This book also had cool artifacts, like an actual sketch drawing of the suspect, a classified ad (faked by the cops to draw the suspect out) and a complain report. I guess that gave it more of a realistic, procedural feel. I wonder if McBain did that stuff himself or if he had people lay it out for him.