I first heard of Tessier's Phantom via the Top 40 horror novels on the Horror Writer's Association website. The list is available here: http://www.horror.org/readlist.htm in alphabetical order.
The book was a quick read. Very crisp and concise. And it was a classic, supernatural-presence tale of horror and suspense. A straight-forward spooky tale without too many twists or turns. Just genuine fright. The ending, I will say, was not what I was expecting. Which came as a shock, considering the book mainly followed the plot structure of classic ghost stories.
Overall, it wasn't bad. But it wasn't anything to write home about either. Would I put it on my list of top 40 horror novels? Probably not. But I can see why people liked its simplicity at a time (it was published in the 1980s) when horror writers seemed to be getting more and more convoluted.