They came with the promise of peace, but there is more to the Visitors agenda. And when ABC's "V" returns this week, viewers will get a glimpse of what these extra-terrestrial friends are really after.

But if you are expecting massive revelations, you'll need to tune in and watch how events unfold because, like Anna, her on-screen counterpart, actress Morena Baccarin is not letting anything slip.

"We're all wearing these shock collars," she joked. "If we say too much, they zap us. But [showrunner] Scott Rosenbaum has promised a lot of great things, like half-alien/half-human babies and interspecies affairs. And who doesn't want to see a lizard bathing or a lizard kissing a human?"

The foundations for human-Visitor relations have already been laid with Fifth Column member Ryan (Morris Chestnut) discovering that his human girlfriend is pregnant with his not-so-human child.

However, one thing that viewers are desperate to know about is the enigmatic Bliss: What it is and how it is controlling the Visitors during their stay on Earth.

"Bliss is Anna's way of checking in with her people, keeping them happy, and taking care of them," Baccarin said. "She can bliss them out physically and emotionally and it makes them want to do what's best for the species."

Does it matter that she is naked when she does this? No, being naked is simply Anna presenting herself to her people in her more pure state of being.

"It's kind of weird when you think of it that way," she said. "She's just, you know, in her purest form. And that's only her human nakedness."

When the series returns, Erica (Elizabeth Mitchell) is placed in mortal danger after an assault at home, and the resistance will work to bring in a new member. Meanwhile, up on the Manhattan mothership, Anna (Morena Baccarin) begins to have doubts over her beliefs regarding Chad (Scott Wolf), who hasn't checked in after his medical procedure.

Like several other science-fiction shows, "V" has become something of a microcosm for the present day's geopolitical climate. Among the allegories for the series is the leadership of President Obama, who has instituted several reforms to the nation's administration. And, as some viewers have pointed out, the situation is not unlike the changes charted in the series with the arrival of the Vs.

Such correlations are not directly intentional, Baccarin explained, but the series does aim to be very relevant when it comes to global politics.

"That wasn't exactly what we were going for, but the show is very relevant and very contemporary, so I'm glad that people are thinking about it in those terms," she said. "We deal with things that are very tangible, like health care and the energy crisis."

"V" returns March 30 on ABC.