Oddly (but not for the entertainment business), one of the two suspects is a priest, "Father Frank Berlin," the pastor of the church when the victim was displayed. The other main suspect is a car dealer in the area. Both men - and the victim - have known each other for years, it turns out, and both men were in love with this woman.
I won't get into all the theological issues presented on the show. Suffice to say, no CSI is ever shown to be anything but a skeptic, never a Believer. Some are a little rude about it, some are more tolerant. "Grissom" is in the latter category. By the way, much of the CSI crew seems to be ex-Catholics.
The actor, Sean Patrick Flannery, who played the car dealer, "The Big Hombre," was the most interesting of the two men, in my opinion. Complications also set in when it's figured out that one of the two men got the woman pregnant.