Ghost Whisperer fans around the globe think that Jennifer Love Hewitt's character, Melinda Gordon, is pregnant by her beloved but dead husband, Jim Clancy (David Conrad). Complicating matters, while Jim's body may be no more, his soul lives on in the body of Sam (Kenneth Mitchell).

Hewitt's heard all the, er, whispers, about a baby, but as the second half of Ghost Whisperer's fourth season kicks off, she ain't talking.

"Well, I can't answer the Melinda pregnancy rumors," Hewitt said in an interview. "I can't answer that. But it gets tricky from here on out, for Melinda particularly. Sam had another life, and he's essentially a guy who's dealing with amnesia. And it's constantly a ticking clock for Melinda on what he's going to remember and how he's going to remember it, and if it's her he's going to remember. So it'll be painful. It will be tricky."

Of course, love—with a lower-case L—is stronger than death. And that means sparks will no doubt fly between Melinda and Jim/Sam.

"There will also be romance," confirmed Hewitt, who's not only the star of Ghost Whisperer but also a very hands-on producer. "I'm obsessed with the Twilight books right now, and Jim/Sam and Melinda very much have that Edward/Bella connection. For some reason, this guy knows that his heart wants him to stay near this woman, and he doesn't know why. And there can be nothing more romantic than that."

Hewitt added, "So for all those romantic people, I would say keep watching the show, because it gets really good. I can't really say whether he's going to remember her or not, but it's intense, what's coming up." Ghost Whisperer returns to CBS tonight at 8 p.m. ET/PT, with an episode entitled "Life on the Line."