Anne Heche appears to have found a home at Lifetime. She stars in “Fatal Desire” (8 p.m., Lifetime) with Eric Roberts. They play two lonely people who meet on the Internet and conduct a cyberflirtation leading to a torrid, destructive fling that ends in murder.

Heche brings a palpable, believable desperation to her character, a Pittsburgh mother who has grown frightened of her mysterious and possibly mob-connected husband. Roberts’ character exudes the confusion of a once-handsome man well past his prime. He seems to need only a gentle push to send his life spiraling into disarray.

¢ “Penn & Teller: Bull*t!” (9 p.m., Showtime) returns for a fourth season of iconoclastic argument. The comic illusionists take on sacred cows with profane passion, wit and all of the subtlety of a blowtorch.

In tonight’s season opener, Penn & Teller argue that the Boy Scouts have no right to exclude and demonize gays and atheists. As libertarians, they believe that a private organization can set its own rules, but since the Boy Scouts organization receives public funding and subsidies and often meets in school buildings and campsites funded by taxpayers, it has forfeited the right to such exclusivity.

Tonight’s other highlights

¢ The NCAA Basketball Tournament (7 p.m., CBS) concludes.

¢ Three years of flashbacks fill in gaps in the story on “Prison Break” (7 p.m., Fox).

¢ A tattooed punk and a perfect Southern belle battle it out on “Wife Swap” (7 p.m., ABC).

¢ Jake’s recovery spooks Nina on “Everwood” (8 p.m., WB).

¢ New links to the terrorists become evident on “24” (8 p.m., Fox).

¢ Brothers in battle on “Supernanny” (8 p.m., ABC).

¢ Ace Young (“American Idol”) appears on “Half & Half” (8:30 p.m., UPN).

¢ The teams compete to compose a jingle on “The Apprentice” (9 p.m., NBC).

¢ No eyes to see on “Miracle Workers” (9 p.m., ABC).